Sylvy Anscombe received her PhD from the University of Oxford in 2013 with a thesis on Definability in Henselian Fields, under the supervision of Jochen Koenigsmann. She works now in the Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy at the University of Central Lancashire, in Preston (UK).

Philip Dittmann received his PhD from the University of Oxford in 2018 with a thesis on A model-theoretic approach to the arithmetic of global fields, under the supervision of Jochen Koenigsmann. He is currently a postdoc at the Technical University in Dresden (Germany).

Yong Hu obtained his PhD in 2012 from the University Paris-Sud 11 under the supervision of Jean-Louis Colliot-Thélène. After being for a couple of years an associate professor at the University of Caen (France), he was appointed in 2017 as an assistant professor at the Southern University of Science and Technology in Shenzhen (China). He is an expert on local-global principles of quadratic forms and related field invariants. In 2020 he will support the ALGAR summer school as a lecturer for the second time, after 2018.

Jean-Pierre Tignol learned the theory of linear algebraic groups from Jacques Tits and became a renowned expert on central simple algebras and their involutions. From the time of his PhD, which he obtained in 1979, he spent all his carreer at Université Catholique de Louvain (UCL) where he got promoted to professor emeritus in 2019. After several other books, he recently published a monograph on Value functions on simple algebras, and associated graded rings together with Adrian Wadsworth. In 2020 he will support our ALGAR summer school for the second time in a row, this time with lectures on valuations and value functions.