Analysis & Geometry Seminar: Aim & Scope

This is the weekly research seminar of the analysis & geometry-interested people in Antwerpen. During the semester, we'll have once per week a research talk in analysis and/or geometry and/or related topics. The list of speakers comprises researchers from Antwerpen as well as other universities.

To be added/deleted from the mailing list, please send an email to:                   

sonja dot hohloch AT uantwerpen dot be

2023/24 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h in M.G.004

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Feb 14, 2024 [DR]

no talk

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Feb 21, 2024

no talk

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Feb 28, 2024

no talk

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March 6, 2024

no talk

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March 13, 2024 [eDR]

Speaker: Maarten Mol (MPI Bonn)

Title: Kähler metrics and toric Lagrangian fibrations.

Abstract: click here.

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March 20, 2024

no talk (Joaquim Brugues' public defense in Barcelona)

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MONDAY, March 25, 2024 (Attention! Different day but same time & room!)

Speaker: Marcello Seri (Groningen)

Title: Spectral geometry of sub-Riemannian manifolds.

Abstract: click here.

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April 3, 2024

no talk (Easter holidays)

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April 10, 2024

no talk (Easter holidays)

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April 17, 2024

Speaker: 

Title: 

Abstract:

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April 24, 2024

Speaker: Joan Grandes Umbert (Antwerpen & Barcelona)

Title: tba.

Abstract: tba.

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May 1, 2024

no talk (official holiday)

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May 8, 2024 [maybe no talk: Thursday + Friday holidays]

Speaker: 

Title:

Abstract:

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May 15, 2024 [DR]

Speaker: 

Title:

Abstract:

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May 22, 2024

Speaker: Andries Salm (ULB)

Title: tba.

Abstract: tba.

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2023/24 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h, room M.G.004

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Sept 27, 2023

Speaker: Dustin Connery-Grigg (Sorbonne)

Title: Floer theory and symplectic dynamics.

Abstract: click here.

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Oct 04, 2023

Speaker: Pierre Bieliavsky (UC Louvain)

Title: Symmetric spaces and quantization.

Abstract: click here.

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Oct 11, 2023 [DR], ATTENTION: starts at 17:00h !!!

Speaker: Aldo Witte (Antwerpen)

Title: Jets of foliations

Abstract: click here.

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Oct 18, 2023

Speaker: Pedro Santos (Antwerpen)

Title: (Non)-Displaceability of fibers of semitoric systems.

Abstract: click here.

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Oct 25, 2023

no talk

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Nov 1, 2023

no talk (holiday)

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Nov 8, 2023 [DR]

no talk

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Nov 15, 2023

Speaker: Federico Zadra (Groningen)

Title: Numerical and analytical aspects of contact Hamiltonian systems.

Abstract: click here.

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Nov 22, 2023

Speaker: Francesco Morabito (Ecole Polytechnique Paris)

Title: Hofer Norms on Braid Groups and Quantitative Heegaard-Floer Homology.

Abstract: click here.

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Nov 29, 2023 [DR], ATTENTION: starts at 17:00h !!!

Speaker: Karl Grosse-Erdmann (Mons)

Title: How chaotic is differentiation?

Abstract: click here.

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Dec 6, 2023

Speaker: Joaquim Brugués (Antwerpen & UPC Barcelona)

Title: Floer homology for b-symplectic manifolds.

Abstract: click here.

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Dec 13, 2023

Speaker: Jonas Deré (KU Leuven)

Title: Ricci negative solvmanifolds and their nilradicals.

Abstract: click here.

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Dec 20, 2023

No talk: Young Scholar Day of the Belgian Mathematical Society at VUB.

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2022/23 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h.

ATTENTION: The talks will take place either in M.G.004 or ONLINE via ZOOM plus/minus live stream in M.G.004. The precise modalities will be announced/posted for each talk individually.

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Feb 15, 2023

no talk

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Feb 22, 2023

Speaker: Maxime Fairon (Paris-Saclay)

Title: A new real form of the spin Ruijsenaars-Schneider system

Abstract: click here.

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March 1, 2023 [Talent Forum]

no talk [overlap with the Talent Forum for Ba/Ma students and a doctoral school event mandatory for starting PhD students].

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March 8, 2023 [DR]

Speaker: Constant Huiszoon (Antwerpen)

Title: Existence of an invariant Riemann surface through a zero of a holomorphic vector field.

Abstract: click here.

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March 15, 2023

No talk due to overlap with the Math Research Day of the Department of Mathematics of the University of Antwerp where everybody is encouraged to join.

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March 22, 2023

Speaker: Malika Belrhazi (Antwerpen)

Title: The linear connection approach to Chaplygin nonholonomic systems. 

Abstract: click here.

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March 29, 2023

No talk due to overlap with the following events where everybody is encouraged to participate:

1) Young researchers' workshop at KU Leuven.

2) BMS breakthrough event in Brussels.

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April 5, 2023

no talk (Easter holidays)

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April 12, 2023 [DR]

no talk (Easter holidays)

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April 19, 2023 [Fiesta Mundial]: ATTENTION !!!  2 talks !!!

1st speaker (16:00 - 17:00h): Tobias Henriksen (Groningen)

Title: Symplectic homology and shape of cotangent bundles.

Abstract: click here.

2nd speaker (17:00 - 18:00): Nikolay Martynchuk (Groningen)

Title: Scattering in the A2 singularity

Abstract: click here.

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April 26, 2023: ATTENTION !!!  2 talks !!!

1st speaker (16:00 - 17:00h): Renata Turkes (Antwerpen)

Title: What is ... Topological Data Analysis?

Abstract: click here.

2nd speaker (17:00 - 18:00): Kenzo Yasaka (Antwerpen)

Title: Exterior differential systems and local solvability.

Abstract: click here.

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May 3, 2023

Speaker: Pau Mir (UPC Barcelona)

Title: Construction of b-semitoric systems.

Abstract: click here.

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May 10, 2023 [DR]

Speaker: Edward Bryden (Antwerp)

Title: The Stability of Llarull’s Theorem in three dimensions.

Abstract: click here.

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May 17, 2023 [UA May 18-20 closed: Ascension Day]

no talk.

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May 24, 2023

Speaker: Naomi Flamand (Antwerpen)

Title: Hirzebruch systems and swallowtails.

Abstract: click here.

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May 31, 2023

Speaker: Jean Gutt (Toulouse)

Title: Transverse Dolbeault Cohomology

Abstract: click here.

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2022/23 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h.

ATTENTION: Depending on the state of the art of the corona measures and the preference of the speaker, the talks will take place either in M.G.004 or ONLINE via ZOOM plus/minus live stream in M.G.004. The precise modalities will be announced/posted for each talk individually.

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Sept 28, 2022

no talk.

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Oct 05, 2022 [DR]

no talk.

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Oct 12, 2022

Speaker: Kenzo Yasaka (Antwerpen)

Title: The solutions and monodromy of the irregular Knizhnik–Zamolodchikov equations.

Abstract: click here.

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Oct 19, 2022

Speaker: Pedro Santos (Antwerpen)

Title: Lagrangian Floer homology of cotangent bundles.

Abstract: click here.

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Oct 26, 2022 [DR] --- Attention: talk starts at 17:00h !!!

Speaker: Tom Mestdag (Antwerpen)

Title: The inverse problem of Lagrangian mechanics.

Abstract: click here.

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Nov 02, 2022

no talk (holiday).

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Nov 09, 2022

Speaker: Fabian Ziltener (Utrecht)

Title: Capacities as a complete symplectic invariant.

Abstract: click here.

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Nov 16, 2022

Speaker: Thomas Rot (VU Amsterdam)

Title: Proper homotopy classes of Fredholm mappings.

Abstract: click here.

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Nov 23, 2022

Speaker: Ignacio Barros (Antwerpen)

Title: Birational classification of moduli spaces.

Abstract: click here.

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Nov 30, 2022 [DR] --- Attention: talk starts at 17:00h (!!!) and is zoom streamed in M.G.004.

Speaker: Emily Schaal (Stony Brook)

Title: The Penrose Inequality in Spherical Symmetry.

Abstract: click here.

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Dec 07, 2022 --- Attention: talk is zoom streamed in M.G.004.

Speaker: Carla Cederbaum (Tübingen)

Title: The center of mass of an isolated relativistic system and its motion.

Abstract: click here.

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Dec 14, 2022

Speaker: Marco Usula (ULB)

Title: 0-elliptic boundary value problems and applications.

Abstract: click here.

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Dec 21, 2022

Speaker: Andriy Haydys (ULB)

Title: On Z/2 harmonic spinors and forms in dimension three.

Abstract: click here.

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2021/22 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h.

ATTENTION: Depending on the state of the art of the corona measures and the preference of the speaker, the talks will take place either in M.G.005 or ONLINE via ZOOM plus/minus live stream in M.G.005. The precise modalities will be announced/posted for each talk individually.

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Feb 16, 2022

no talk

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Feb 23, 2022 --- ONLINE via ZOOM with live stream in M.G.005.

[parallel with UA talent forum]

Speaker: Duvan Cardona (Gent)

Title: On the Wodzicki residue on compact Lie groups and the paradigm of the global quantisation.

Abstract: click here.

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March 2, 2022 --- ONLINE via ZOOM with live stream in M.G.005.

Speaker: Maria Amelia Salazar (Universidade Federal Fluminense, Brazil)

Title: Cohomology and characteristic classes in Lie theory.

Abstract: click here.

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March 9, 2022 [DR] --- on campus only in M.G.005!!!

Speaker: Güner Muarem (Antwerpen)

Title: A new Fischer decomposition for symplectic spinor-valued polynomials and branching rules.

Abstract: click here.

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March 16, 2022: ATTENTION: Different start time & venue!

Where: on campus in M.G.010 and ONLINE via Zoom.

When: 14:00 -- 15:00h 

What: Public PhD Defense (which is part of  the

2-day miniworkshop "From toric to hyperbolic").

Speaker: Yannick Gullentops (Antwerpen)

Title: Hyperbolic singularities in the presence of
S^1-actions and Hamiltonian PDEs.

Abstract: click here.

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March 23, 2022

no talk

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March 30, 2022 [DR] --- on campus only in M.G.005!!!

Speaker: Senne Ignoul (Antwerpen)

Title: Classification of compact connected contact toric G-manifolds. 

Abstract: click here.

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April 6, 2022

no talk (Easter holidays)

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April 13, 2022

no talk (Easter holidays)

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April 20, 2022 [UA: Fiesta Mundial] --- on campus only in M.G.005!!!

Speaker: Joaquim Brugués (UAntwerpen & UPC Barcelona)

Title: Towards a Poincaré-Hopf theorem for b-tangent bundles.

Abstract: click here.

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April 27, 2022 --- on campus only in M.G.005

Speaker: David Martín de Diego (ICMAT, Madrid)

Title: A parallel iterative method for variational integration.

Abstract: click here.

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May 4, 2022 [DR]

no talk

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May 11, 2022 --- ATTENTION: between 17-18h online via ZOOM & streamed in M.G.005

Speaker: Brian Allen (University of Hartford)

Title: Sobolev Theory for Riemannian Manifolds.

Abstract: click here.

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May 18, 2022 --- ATTENTION: between 14-15h on campus only in M.G.005

Speaker: Malika Belrhazi (Antwerpen)

Title: Lagrangian systems with nonholonomic constraints.

Abstract: click here.

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May 25, 2022

no talk

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2021/22 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h.

ATTENTION: Depending on the state of the art of the corona measures, the talks will take place either in M.G.004 or ONLINE via ZOOM. It will be announced/posted for each talk individually.

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Sept 29, 2021

no talk

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Oct 6, 2021 [DR], in M.G.004 ON CAMPUS !

Speaker: Sandor Hajdu (Antwerpen)

Title: Nonlinear splittings on fibre bundles.

Abstract: click here.

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Oct 13, 2021 via ZOOM, but all locals may listen to it in M.G.004

Speaker: Francesco Fassò (Padova)

Title: Geometry of Hamiltonian superintegrable systems.

Abstract: click here.

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Oct 20, 2021 via ZOOM, but all locals may listen to it in M.G.004

Speaker: Marcello Seri (Groningen)

Title: Contact mechanics and numerical integration.

Abstract: click here.

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Oct 27, 2021 [DR] at 16:30h (!!!) in M.G.004 ON CAMPUS!

Speaker: Jaume Alonso (TU Berlin)

Title: Integrable discretisations of the Euler top and the Zhukovski-Volterra gyrostat

Abstract: click here.

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Nov 3, 2021

no talk

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Nov 10, 2021

no talk

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Nov 17, 2021

Speaker: Aldo Witte (KU Leuven)

Title: Self-crossing boundary Lefschetz fibrations.

Abstract: click here.

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Nov 24, 2021

Speaker: Edward Bryden (Tübingen)

Title: The area-angular momentum-charge inequality for black holes with positive cosmological constant.

Abstract: click here.

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Dec 1, 2021 [DR]

no talk

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Dec 8, 2021: ONLINE via ZOOM

Speaker: Charlotte Kirchhoff-Lukat (MIT)

Title: Combinatorial Floer theory for orientable log symplectic surfaces.

Abstract: click here.

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Dec 15, 2021 [OC]: at 17:30h (!!!) ONLINE via ZOOM

​Speaker: Marta Farre Puiggali (Antwerpen)

Title: Nonholonomic systems and the inverse problem

Abstract: click here.

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Dec 22, 2021 ONLINE via ZOOM

Speaker: Masoud Ahookhosh (Antwerpen)

Title: Convergence Analysis of Non-Euclidean Methods for Nonsmooth Nonconvex Optimization.

Abstract: click here.

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2020/21 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h.

ATTENTION: Until further notice, the seminar will take place ONLINE via Microsoft Teams to comply with the strengthened anti-corona measures of the University of Antwerp.

[The usual seminar room M.G.005 has a capacity for 24 people in "corona code (dark) orange" and for more people in "code yellow" or "code green". Since the number of seminar attendants usually varies around 10 people, seminar meetings are conform with the anti-corona measures of the University of Antwerpen pending additional measures. During "code red" or worse, the seminar takes place online via Microsoft Teams.]

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Feb 10, 2021 [DR] [OC?]

No talk (first week of term heavy on administrative meetings...)

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Feb 17, 2021

Natalyia Balabanova (Manchester)

Titel: Vortex dynamics on non-orientable manifolds.

Abstract: click here.

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Feb 24, 2021

Alexey Bolsinov (Loughborough University)

Titel: Nijenhuis Geometry

Abstract: click here.

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March 3, 2021

Alexey Bolsinov (Loughborough University)

Titel: On symplectic invariants of integrable Hamiltonian systems.

Abstract: click here.

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March 10, 2021 [DR]

Peter De Maesschalck (Hasselt)

Titel: Smale's problem on limit cycles.

Abstract: click here.

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March 17, 2021: DOUBLE EVENT

1. Speaker (16-17h): Eva Miranda (UPC Barcelona)

Titel: Singular Floer theory and singular Hamiltonian/Reeb Dynamics: First steps (PART I).

Abstract: click here.

2. Speaker (17-18h): Joaquim Brugués (UPC Barcelona & Antwerpen)

Titel: Singular Floer theory and singular Hamiltonian/Reeb Dynamics: First steps (PART II).

Abstract: click here.

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March 24, 2021

Philipp Reiter (TU Chemnitz)

Titel: A bending‐twist model for inextensible curves.

Abstract: click here.

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March 31, 2021 [eDR] - ATTENTION: STARTS EXCEPTIONALLY at 14:30h !!!

Nikolay Martynchuk (Moscow Center for Fundamental and Applied Mathematics)

Titel: On symplectic invariants of integrable Hamiltonian systems in the smooth category.

Abstract: click here.

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April 21, 2021

No talk due to the Mathematics Research Day of the Department of Mathematics of the University of Antwerp.

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April 28, 2021

Bas Janssens (TU Delft)

Titel: Positive energy representations of gauge groups on conformally compactified Minkowski space.

Abstract: click here.

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May 5, 2021 [DR]

--- ATTENTION: TALK STARTS AT 16:30h !!! ---

Bruno Premoselli (ULB)

Titel: Negatively curved Einstein metrics on quotients of 4-dimensional hyperbolic manifolds. 

Abstract: click here.

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May 12, 2021

Online Miniworkshop on contact and symplectic dynamics

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May 19, 2021

(no talk)

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2020/21 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h -- now ONLINE instead of in room M.G.005!

ATTENTION: Starting Oct 28, 2020, the seminar will take place ONLINE via Microsoft Teams to comply with the strengthened anti-corona measures of the University of Antwerp.

[The seminar room M.G.005 has a capacity for 24 people in "corona code (dark) orange" and for more people in "code yellow" or "code green". Since the number of seminar attendants usually varies around 10 people, seminar meetings are conform with the anti-corona measures of the University of Antwerpen pending additional measures. Moreover, this term we will focus on talks by local speakers in order to minimize traveling.]

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Sept 23, 2020 [OC]

no talk since OC-meeting in the afternoon.

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Sept 30, 2020

Marine Fontaine (University of Antwerp)

Title: Real forms and Hamiltonian dynamics.

Abstract: click here.

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Oct 7, 2020 [DR]

Sándor Hajdú (University of Antwerp)

Title: Jacobi fields and conjugate points for a projective class of sprays.

Abstract: click here.

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Oct 14, 2020

Marcelo Alves (ULB & University of Antwerp)

Title: C0-Entropy Stability for Geodesic Flows on the 2-dimensional Torus.

Abstract: click here.

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Oct 21, 2020

Sonja Hohloch (University of Antwerp)

Title: Towards `hypersemitoric' systems.

Abstract: click here.

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Oct 28, 2020

Marta Farré Puiggalí (University of Antwerp)

Title: Inverse problem and control.

Abstract: click here.

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Nov 4, 2020 [DR]

Tom Mestdag (University of Antwerp)

Title: Reduction, reconstruction and un-reduction of dynamical systems with symmetries.

Abstract: click here.

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Nov 11, 2020

no talk (holiday)

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Nov 18, 2020

Güner Muarem (University of Antwerp)

Title: An “orthogonalized” symplectic Dirac operator and branching procedures.

Abstract: click here.

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Nov 25, 2020

Yannick Gullentops (University of Antwerp)

Title: Hyperbolic-regular fibers.

Abstract: click here.

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Dec 2, 2020 [DR]

Wouter Van den Haute (University of Antwerp)

Title: Normality in terms of distances, contractions, and extensions of functions.

Abstract: click here.

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Dec 9, 2020

Tim Verdonck (University of Antwerp)

Title: Anomaly detection using robust statistics.

Abstract: click here.

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Dec 16, 2020 [OC]

no talk (originally OC meeting in the afternoon).

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2019/20 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h  in M.G.005

Feb 12, 2020 [DR]:

no talk.

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Feb 19, 2020:

Güner Muarem (Antwerpen)

Title: Towards point vortex dynamics on the Wallach space W^6 and further generalizations.

Abstract: click here.

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Feb 26, 2020:

Ramón Vera (KU Leuven)

Title: Geometry of near-symplectic forms.

Abstract: click here.

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March 4, 2020:  TWO TALKS!

16-17h: Toshihiro Iwai (Kyoto University)

Title: Bulk-edge correspondence for the Dirac oscillator on the two-torus as a magnetic unit cell.

Abstract: click here.

17-18h: Daisuke Tarama (Ritsumeikan University)

Title: Geometry and analysis for the Kirchhoff equations under the Clebsch condtion.

Abstract: click here.

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March 11, 2020 [DR]:

Jeffrey Cornelis (Antwerpen)

Title: Automatic regularization of ill-conditioned linear systems.

Abstract: click here.

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March 18, 2020:

no talk due to "corona shutdown":

Originally planned talk by Peter De Maesschalck (Hasselt) postponed until further notice!

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March 25, 2020:

no talk due to "corona shutdown".

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April 1, 2020:

no talk due to "corona shutdown":

Originally planned talk by Douglas Schultz (HU Berlin) postponed until further notice!

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April 22, 2020:

no talk due to "corona shutdown":

Originally planned talk by Guido Carlet (Institut de Mathématiques de Bourgogne, Dijon) postponed until further notice!

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April 29, 2020 [DR]:

no talk due to "corona shutdown".

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May 6, 2020:

no talk due to "corona shutdown":

Originally planned talk by Tim Verdonck (Antwerpen) postponed until further notice!

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May 13, 2020:

no talk due to "corona shutdown":

Originally planned talk by Bas Janssens (TU Delft) postponed until further notice!

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May 20, 2020:

no talk due to "corona shutdown".

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2019/20 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h  in M.G.005

Sept 25, 2019:

Sándor Hajdú (Antwerpen)

Title: Jacobi fields and conjugate points for second-order differential equations.

Abstract: click here.

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Oct 2, 2019:

Boris Zhilinskií (Université du Littoral)

Title: Energy band rearrangements for finite-particle quantum systems: Symmetry and topology aspects.

Abstract: click here.

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Oct 9, 2019 [DW]:

Joseph Palmer (Antwerpen)

Title: Integrable systems and S^1 actions.

Abstract: click here.

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Oct 16, 2019:

Yannick Herfray (ULB)

Title: An ambient approach to conformal geodesics.

Abstract: click here.

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Oct 23, 2019:

Marcelo Alves (ULB)

Title: Flat knots and forcing of topological entropy for Reeb flows.

Abstract: click here.

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Oct 30, 2019:

Johan van de Leur (Utrecht)

Title: On polynomial tau-functions of KP and KdV type hierarchies.

Abstract: click here.

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Nov 6, 2019:

Joel Villatoro (KU Leuven)

Title: Holonomy for Singular Foliations.

Abstract: click here.

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Nov 13, 2019 [DW]:

Tobias Diez (TU Delft)

Title: Singular symplectic cotangent bundle reduction in infinite dimensions.

Abstract: click here.

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Nov 20, 2019:

Wim Vanroose (Antwerpen)

Title: Iterative methods for the Helmholtz equation. 

Abstract: click here.

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Nov 27, 2019 [DW]:

Sjors Heefer (TU Eindhoven)

Title: Finsler Gravity.

Abstract: click here.

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Dec 4, 2019:

Yannick Gullentops (Antwerpen)

Title: Symplectic scale manifolds and the Cauchy-Riemann-Fueter equation.

Abstract: click here.

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Dec 11, 2019 [OC]:

no talk (OC!)

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Dec 18, 2019:

no talk (people travelling)

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2018/19 --- 2nd semester (spring)

Usually Wednesdays 16:00 - 17:00h  in M.G.005

Feb 13, 2019

Güner Muarem (Antwerpen)

Title: Symmetries of differential operators and the Fueter theorem.

Abstract: click here.

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Feb 20, 2019

Siegfried Cools (Antwerpen)

Title: Analyzing and Improving Attainable Accuracy for the Communication Hiding Pipelined Conjugate Gradient Method.

Abstract: click here.

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Feb 27, 2019

no talk (replaced by double talk on April 24)

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March 6, 2019 [OC]

Charlotte Kirchhoff-Lukat (KU Leuven)

Title: Stable generalized complex geometry, blow-up and Lagrangian submanifolds.

Abstract: click here.

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March 13, 2019 [DWIN], ATTENTION: 15:30 - 16:30 !!!

Sonja Hohloch (Antwerpen)

Title: Optimal transport, integer partitions, and integrable systems.

Abstract: click here.

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March 20, 2019

Philip Arathoon (University of Manchester)

Title: Singular reduction of the 2-body problem on the 3-sphere and the 4-dimensional Lagrange top.

Abstract: click here.

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March 27, 2019

David Eelbode (Antwerpen)

Title: Howe duality for the orthogonal and spin group.

Abstract: click here.

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April 3, 2019 [DWIN]

Annelies De Meulenaere (Antwerpen)

Title: A semitoric transition family with four transition points.

Abstract: click here.

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April 24, 2019, ATTENTION: 2 TALKS !

Mahouton Norbert Hounkonnou (University of Abomey-Calavi)

a) 16:00 - 16:45: Colloquium style talk

Title: Generalized deformed quantum differential calculus and integration.

Abstract: click here.

b) 17:00 - 18:00h: Standard seminar talk

Title: Quasi-bi-Hamiltonian stuctures for the Kepler Problem in a deformed phase space.

Abstract: click here.

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May 1, 2019

(no talk: holiday)

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May 8, 2019 [DWIN]

(no talk: many people travelling)

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May 15, 2019

Carolin Kreisbeck (Utrecht)

Title: Asymptotic rigidity of layered structures and its applications in homogenization theory.

Abstract: click here.

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May 22, 2019

Oliver Fabert (VU Amsterdam)

Title: On the small divisor problem in infinite-dimensional Floer theory.

Abstract: click here.

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June 25, 2019, ATTENTION: different time & location!

TUESDAY between 14:00 - 15:00h in M.G.006!

Joaquim Brugués (UPC Barcelona)

Title: An introduction to b-symplectic geometry.

Abstract: click here.

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Juli 8, 2019, ATTENTION: different day & time!

MONDAY between 15:00 - 16:00h in M.G.005

San Vũ Ngǫc (Université Rennes 1)

Title: Quantum footprints of Liouville integrable systems.

Abstract: click here.

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August 28, 2019, ATTENTION: different time & location!

Wednesday between 14:00 - 15:00h in M.G.004

Yasushi Homma (Waseda University)

Title: Toward spin 3/2 geometry.

Abstract: click here.

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2018/19 --- 1st semester (autumn)

Usually Wednesdays 16:00 - 17:00h  in M.G.005

Sept 26, 2018:

no talk (OC-vergadering in the afternoon).

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Oct 3, 2018:

Marine Fontaine (Antwerpen)

Title: Lyusternik-Schnirelmann category and Localization Formula.

Abstract: click here.

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Oct 10, 2018:

Jan Naudts (Antwerpen)

Title: Non-Commutative Information Geometry.

Abstract: click here.

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Oct 17, 2018:

Álvaro del Pino Gomez (Utrecht)

Title: Wrinkled embeddings and horizontal submanifolds.

Abstract: click here.

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Oct 24, 2018:

Reinier Storm (KU Leuven)

Title: Structure theory of naturally reductive spaces.

Abstract: click here.

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Oct 31, 2018:

no talk (Thursday and Friday are holidays).

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Nov 7, 2018:

no talk (got replaced by the "minicourse event" in Antwerpen on Nov 23).

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Nov 14, 2018:

Rob Vandervorst (VU Amsterdam)

Title: Dynamics and braiding.

Abstract: click here.

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Nov 21, 2018:

Sándor Hajdú (Antwerpen)

Title: Geodesic Lemmas.

Abstract: click here.

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Nov 28, 2018:

Ralph Klaasse (ULB)

Title: Poisson structures of divisor-type and symplectic Lie algebroids.

Abstract: click here.

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Dec 5, 2018:

Yohan Le Floch (Strasbourg)

Title: Semitoric families.

Abstract: click here.

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Dec 12, 2018:

Tom Mestdag (Antwerpen)

Title: The inverse problem of the calculus of variations.

Abstract: click here.

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Dec 19, 2018:

no talk (got replaced by the mini-courses event at the ULB on Nov 29)

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Jan 28, 2019 (MONDAY, 14-15h in M.G.005)

Tudor Ratiu (Shanghai Jiao Tong University & EPF Lausanne)

Title: Momentum maps with values in differential character groups.

Abstract: click here.

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2017/18 --- 2nd semester (spring)

Usually Mondays 16:00 - 17:00h  in M.G.005

Feb 12, 2018:

Kenny De Commer (VUB)

Title: Knizhnik-Zamolodchikov differential equations, braid group representations and quantum groups.

Abstract: click here.

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Feb 19, 2018:

Benoît Legat (UC Louvain)

Title: Optimal stabilization of constrained switched systems and application to co-simulation.

Abstract: click here.

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Feb 26, 2018:

Eduardo Garcia-Torano Andres (Universidad Nacional del Sur, Argentinia)

Title: Routh reduction for Lagrangian field theories.

Abstract: click here.

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Mar 5, 2018:

TALK MOVED TO MAY 14 !!!

 

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Mar 12, 2018: EXCEPTIONALLY IN M.G.006!!!

Cédric Oms (UPC Barcelona)

Title: Singular contact manifolds.

Abstract: click here.

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Mar 19, 2018:

Tim Janssens (Antwerpen)

Title: Special functions in higher spin setting.

Abstract: click here.

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Mar 26, 2018:

Karel In't Hout (Antwerpen)

Title: ADI methods for the numerical solution of multi-dimensional partial differential equations in finance.

Abstract: click here.

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April 16, 2018:

Joeri Van der Veken (KU Leuven)

Title: Lagrangian submanifolds of the complex quadric.

Abstract: click here.

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April 23, 2018:

Konstantinos Efstathiou (Groningen)

Title: Monodromy and circle actions.

Abstract: click here.

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April 30, 2018:

No talk since part of the audience is travelling.

 

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May 7, 2018:

Jaume Alonso Fernández (Antwerpen)

Title: Persistent homology and its applications to symplectic topology.

Abstract: click here.

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May 14, 2018: EXCEPTIONALLY 2 SPEAKERS !!!

1) Güner Muarem (Antwerpen): 16-17h

Title: Peter-Weyl’s theorem as a bridge between representation theory and harmonical analysis.

Abstract: click here.

2) Martins Bruveris (Brunel University, London): 17-18h

Title: Soliton solutions for the elastic metric on spaces of curves.

Abstract: click here.

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August 21, 2018:

EXCEPTIONALLY on TUESDAY at 14-15h in M.G.005 !!!

Joseph Palmer (Rutgers University)

Title: Families of semitoric systems.

Abstract: click here.

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August 28, 2018:

EXCEPTIONALLY on TUESDAY at 14-15h in M.G.005 !!!

Joseph Palmer (Rutgers University)

Title: Immersed Floer cohomolgy and reverse mean curvature flow.

Abstract: click here.

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September 19, 2018:

EXCEPTIONALLY on WEDNESDAY 13:30-14:30h in M.G.005 !!!

Holger Dullin (University of Sydney)

Title: Symplectic reduction of the 3-body problem in 4-dimensional space.

Abstract: click here.

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2017/18 --- 1st semester (autumn)

Usually Tuesdays 14:00 - 15:00h  in M.G.006

Sept 26, 2017

No talk.

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Oct 3, 2017

Jan Van Casteren (Antwerpen)

Title: On Feller semigroups, Markov processes, and their generators.

Abstract: click here.

___________________________________________

Oct 10, 2017

Sonja Hohloch (Antwerpen)

Title: Semitoric systems with two focus-focus singularities.

Abstract: click here.

___________________________________________

Oct 17, 2017

Nick Schenkels (Antwerpen)

Title: Introduction to regularization methods for inverse problems.

Abstract: click here.

___________________________________________

Oct 24, 2017

François Gay-Balmaz (CNRS, LMD-ENS Paris)

Title: A Lagrangian variational formulation for nonequilibrium thermodynamics.

Abstract: click here.

___________________________________________

Oct 31, 2017

no talk (Wednesday, Thursday, Friday in this week are holidays...)

___________________________________________

Nov 7, 2017

David Saunders (University of Ostrava)

Title: Lagrangians with reduced-order Euler Lagrange equations.

Abstract: click here.

___________________________________________

Nov 14, 2017

Heinz Hanßmann (Utrecht)

Title: Hamiltonian oscillators in 1 : ± 2 : ± 4 resonance.

Abstract: click here.

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Nov 21, 2017

Simone Gutt (ULB)

Title: How to select almost complex structures in a symplectic framework.

Abstract: click here.

___________________________________________

Nov 28, 2017

Ori Yudilevich (KU Leuven)

Title: A Modern Approach to Élie Cartan's Structure Theory for Lie Pseudogroups.

Abstract: click here.

___________________________________________

Dec 5, 2017

Melanie Bertelson (ULB)

Title: Is there such a thing as Piecewise Linear symplectic geometry?

Abstract: The answer to the above-raised question is as yet unclear. Our explorations of the reasons why will be described in the talk. This is a joint work with Julie Distexhe and Yasha Eliashberg.

___________________________________________

Dec 12, 2017

Yannick Gullentops (Antwerpen)

Title: Symplectic geometry on Hilbert scales.

Abstract: click here.

___________________________________________

Dec 19, 2017

Marilena Moruz (KU Leuven)

Title: Lagrangian submanifolds of the Nearly Kaehler S^3 x S^3 from minimal surfaces in S^3.

Abstract: click here.

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2016/17 --- 2nd semester (spring)

Usually 14:15 - 15:15h  in  M.G.005

Feb 14, 2017:

Eduardo Garcı́a-Toraño Andrés (Universidad Nacional del Sur, Argentina)

Title: Dirac structures and Port-Hamiltonian systems.

Abstract: click here.

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Feb 21, 2017:

Martins Bruveris (Brunel University London)

Title: Riemannian Metrics on Shape Spaces -- Theory and Applications.

Abstract: click here.

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Feb 28, 2017:

Michiel Wouters (Antwerpen)

Title: Newton's method and Numerical continuation: Application to the Ginzburg-Landau model of superconductivity.

Abstract: click here.

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March 7, 2017:

Marco Zambon (KU Leuven)

Title: Deformations of presymplectic forms.

Abstract: click here.

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March 14, 2017:

Fabian Ziltener (Utrecht)

Title: Coisotropic submanifolds of symplectic manifolds and leafwise fixed points.

Abstract: click here.

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March 21, 2017:

NO TALK, since the speaker got ill. The talk will be rescheduled in April/May.

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March 28, 2017:

Sonja Hohloch (Antwerpen)

Title: Floer homology for homoclinic points.

Abstract: click here.

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April 18, 2017:

Tom Mestdag (Antwerpen)

Title: Reduction and un-reduction by symmetries for systems of second-order differential equations.

Abstract: click here.

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April 25, 2017:

Bob Lowen (Antwerpen)

Title: Approach theory: an overview.

Abstract: click here.

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May 2, 2017:

Ben Berckmoes (Antwerpen)

Title: Approach theory, normal approximation, and the Wasserstein metric.

Abstract: click here.

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May 9, 2017:

no talk.

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May 16, 2017:

Jaume Alonso Fernandez (Antwerpen)

Title: The Taylor series symplectic invariant of semi-toric integrable systems.

Abstract: click here.

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May 23, 2017:

Tim Janssens (Antwerpen)

Title: Gegenbauer polynomials in higher spin Clifford analysis.

Abstract: click here.

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2016/17 --- 1st semester (autumn)

Usually  14:45 - 15:45h  in  M.G.005

Oct 6, 2016:

Oliver Fabert (VU Amsterdam)

Title: The Arnold conjecture in infinite dimensions.

Abstract: click here.

Oct 13, 2016:

Tom Mestdag (Antwerpen)

Title: Symmetry reduction, Finsler geometry and Maupertuis’ principle.

Abstract: click here.

Oct 20, 2016:

Sonja Hohloch (Antwerpen)

Title: Floer homology in finite and infinite dimensions.

Abstract: click here.

Oct 27, 2016:

Matthias Roels (Antwerpen)

Title: A Transvector algebra framework for Stein-Weiss gradients.

Abstract: click here.

Nov 3, 2016:

No talk.

(In this week, Monday through Wednesday are holidays).

Nov 10, 2016:

Roman Golovko (ULB)

Title: On the stable Arnold conjecture.

Abstract: click here.

Nov 17, 2016:

Philipp Reiter (Essen-Duisburg & Heidelberg)

Title: The elastic trefoil is the twice covered circle

Abstract: click here.

Nov 24, 2016:

Ben Berckmoes (Antwerpen)

Title: Statistical inference with contaminated data and Stein's method.

Abstract: click here.

Dec 1, 2016:

Tim Janssens (Antwerpen)

Title: On a higher spin generalisation of the Fueter
theorem.

Abstract: click here.

Dec 8, 2016:

Jaume Alonso Fernandez (Antwerpen)

Title: Focus-focus singularities in semi-toric integrable Hamiltonian systems.

Abstract: click here.

Dec 15, 2016:

no talk.

Title: ---

Abstract: ---

Dec 22, 2016:

Jean Gutt (University of Georgia at Athens)

Title: A cuplength estimate for the minimal number of periodic Reeb orbits.

Abstract: click here.

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Tuesday, Feb 7, 2017 at 14:15h in M.G.006

Rutger-Jan Lange (Erasmus University Rotterdam)

Titel: Optimal stopping of Feller processes at random Poisson times.

Abstract: click here.