2019

- Adrien Perrel (ENS Lyon), May-July 2019

- Erkan Narmanli (ENS Paris), May-July 2019

- Bartłomiej Bosek (Jagiellonian University), April-June 2019

- Xing Shi Cai (Uppsala University), April 2019

- Robert Sedgewick (Princeton), March 2019

- Alice Joffard (ENS Lyon), January-May 2019

- Patrick Morris (FU Berlin), February 2019

- Clément Requilé (TU Wien), February 2019

2018 

- Alberto Espuny (Univ. Birmingham, UK), December 2018

- Sergey Dogval (LIPN, Paris Nord, France), December 2018

- Michael Drmota (TU Wien, Austria), November 2018

- Eric Fusy (CNRS, École Polytechnique, France), November 2018

- Remco van der Hofstad (TU Einhdoven, Netherlands), November 2018

- Christina Goldschmidt (Oxdford, UK), November 2018

- Roberto Imbuzeiro Oliveira (IMPA, Brazil), November 2018

- Maya Stein (U. Chile, Chile), November 2018

- Elie de Panafieu (Bell Labs, Paris, France), November 2018

- Louigi Addario-Berry (McGill, Canada), November 2018

- Shagnik Das (FU Berlin, Germany), October 2018

- Svetlana Poznanović (Clemson University, South Carolina, USA) October 2018

- Valentina Pepe (Univerisita di Roma, La Sapienza, Italy) September 2018

- José Aliste Prieto (Univ. Andrés Bello, Santiago Chile), June 2018

- Grzegorz Gutowski (Jagiellonian University), May 2018

- Bartlomiej Bosek (Jagiellonian University), May 2018

- Jarek Grytczuk (Politechnika Warszawska), May 2018

- Nina Kamcev (ETH Zürich), April 2018

- Matthew Tointon (Neuchatel), January 2018

- Clément Requilé (Linz), January 2018

2017

 - Simon Griffiths (PUC Rio de Janeiro), December 2017

- Pablo Candela (UAM Madrid and ICMAT), November 2017

- Delaram Kahrobaei (City University of New York), October 2017

- Luc Devroye (McGill), June 2017

- Colin McDiarmid (Oxford), June 2017

- Benny Sudakov (ETH Zurich), May-June 2017

- Amin Coja-Oghlan (Frankfurt), June 2017

- Milan Bradonjic (Bell Labs), June 2017

- Guillem Perarnau (Birmingham), June 2017

- Maya Stein (Universidad de Chile), June 2017

- Yufei Zhao (MIT), June 2017

- Lutz Warnke (GeorgiaTech), June 2017

- Christine Bachoc (Bordeaux), June 2017

- Gilles Zémor (Bordeaux), June 2017

- David Conlon (Oxford), June 2017

- Tobias Müller (Utrech), May-June 2017

- Stefanie Gerke (Royal Holloway London), June 2017

- José Aliste-Prieto (UAB Santiago de Chile), May 2017

- Shagnik Das (FU Berlin), April 2017