| Rodrigo MENDES PEREIRA (visio) | Ben Gurion University of the Negev |
| Marta ALDASORO | University of Basque Country |
| Patricio ALMIRÓN (visio) | Universidad Complutense de Madrid |
| Enrique ARTAL BARTOLO (visio) | University of Zaragoza |
| Paul Vladimir BARAJAS GUZMAN (visio) | Universidad Autónoma de Zacatecas |
| André BELOTTO DA SILVA | Université Paris Cité |
| Edward BIERSTONE (visio) | University of Toronto |
| Lev BIRBRAIR (visio) | Universidade Federal Do Ceara |
| Guillem BLANCO (visio) | KU Leuven |
| David BRADLEY-WILLIAMS | Heinrich Heine University Düsseldorf |
| Nero BUDUR | KU Leuven |
| Leonardo CÂMARA (visio) | Universidade Federal do Espírito Santo |
| Pierrette CASSOU-NOGUES (visio) | Univ. Bordeaux |
| Yenni CHERIK | Aix-Marseille Université |
| Jose Ignacio COGOLLUDO AGUSTIN (visio) | University of Zaragoza |
| Georges COMTE (visio) | Université Savoie Mont Blanc |
| Octave CURMI | Alfréd Renyi institute of Matematics |
| Javier DE LA BODEGA (visio) | BCAM - KU Leuven |
| Eduardo DE LORENZO POZA | KU Leuven |
| Maciej DENKOWSKI (visio) | Jagiellonian University |
| Roi DOCAMPO (visio) | University of Oklahoma |
| Daniel DUARTE (visio) | Universidad Autonoma de Zacatecas |
| Nicolas DUTERTRE | Université d'Angers |
| Lorenzo FANTINI | École polytechnique |
| Michaå‚ FARNIK (visio) | Jagiellonian University |
| Charles FAVRE | CNRS École polytechnique |
| Alexandre FERNANDES (visio) | Universidade Federal do Ceara |
| Javier FERNANDEZ DE BOBADILLA | Ikerbasque Basque Fondation for Science |
| Massimo FERRAROTTI (visio) | Politecnico di Torino |
| Goulwen FICHOU (visio) | Université Rennes 1 |
| Arthur FOREY | CNRS Université de Lille |
| Anne FRÜHBIS-KRÜGER | University of Oldenburg |
| Andrei GABRIELOV | Purdue University of Indiana |
| Arturo Enrique GILES FLORES (visio) | Universidad Autónoma de Aguascalientes |
| Roberto GIMÉNEZ CONEJERO (visio) | Universitat de València |
| Hannah Theodora GODDARD NEUMANN | Barnard College, Columbia University |
| Pedro D. GONZALEZ PEREZ (visio) | Universidad Complutense de Madrid |
| Immanuel HALUPCZOK (visio) | University of Düsseldorf |
| Brian HEPLER (visio) | University of Wisconsin-Madison |
| Maria Elenice HERNANDES (visio) | Universidade Estadual de Maringá |
| Justin HOFFMAN (visio) | Rutgers University |
| Zbigniew JELONEK | The Institute of Mathematics of Poland |
| Seung-Jo JUNG (visio) | Jeonbuk National University |
| Quentin KAREGAR BANEH KOHAL (visio) | National Autonomous University of Mexico |
| Dmitry KERNER (visio) | Ben-Gurion University of the Negev |
| Matthias KRECK | University of Bonn |
| Iwona KRZYZANOWSKA (visio) | Gdansk University |
| Krzysztof KURDYKA | Université Savoie Mont Blanc |
| Rémi LANGEVIN | Université de Bourgogne |
| François LOESER | Sorbonne Université |
| Ursula LUDWIG (visio) | University of Münster |
| Ignacio LUENGO (visio) | Complutense University of Madrid |
| Oudrane M'HAMMED | Université Cote d'Azur |
| Clint MCCRORY (visio) | University of Georgia |
| Alejandro MELLE-HERNANDEZ (visio) | Universidad Complutense de Madrid |
| Hussein MOURTADA (visio) | Université Paris Cité |
| Evangelos NASTAS (visio) | SUNY |
| Walter NEUMANN | Columbia University of New York |
| Kien NGUYEN (visio) | KU Leuven |
| Xuan Viet Nhan NGUYEN | BCAM |
| Aleksandra NOWEL (visio) | Gdansk University |
| Raúl OSET SINHA (visio) | Universitat de València |
| Donal OSHEA (visio) | New College of Florida |
| Irma PALLARÉS TORRES | Catholic University of Leuven |
| Irma PALLARÉS TORRES | BCAM Bilbao |
| Adam PARUSINSKI (visio) | Université Côte d'Azur |
| Laurentiu PAUNESCU (visio) | University of Sydney |
| Maria PE PEREIRA | Complutense University of Madrid |
| Helge Møller PEDERSEN (visio) | Universidade Federal do Ceará |
| Tomasz PEŁKA (visio) | University of Warsaw |
| Guillermo PEÑAFORT SANCHIS (visio) | Universitat de València |
| Peter PETROV (visio) | Bulgarian Academy of Sciences |
| Sylvie PIC | Aix-Marseille Université |
| Anne PICHON | Aix Marseille Université |
| Rafal PIERZCHALA (visio) | Jagiellonian University |
| Patrick POPESCU-PAMPU | Université de Lille |
| Michel RAIBAUT (visio) | Université de Savoie Mont Blanc |
| Antoni RANGACHEV | University of Chicago |
| Fernando REIS (visio) | Federal University of Espirito Santo |
| Otto ROMERO (visio) | Instituto de Educación Media Superior |
| Guillaume ROND | Aix-Marseille Université |
| Maria Aparecida RUAS (visio) | Universite de Sao Paulo a Sao Carlos |
| Matteo RUGGIERO (visio) | Université Paris Cité |
| Jose Edson SAMPAIO (visio) | Universidade Federal do Ceará |
| Bernd SCHOBER | University of Oldenburg |
| Jawad SNOUSSI (visio) | Universidad Nacional Autónoma de Méxic |
| Miruna-Stefana SOREA (visio) | SISSA, Trieste |
| Jorge SOTOMAYOR (visio) | Universidade de São Paulo |
| Bernard TEISSIER (visio) | CNRS Université Paris Cité |
| David TROTMAN | Aix-Marseille Université |
| Floris VERMEULEN (visio) | KU Leuven |
| . VIDEOS | . |
| Jonathan WAHL (visio) | University of North Carolina |
| Leslie WILSON (visio) | University of Hawaii |
| Chenyang XU (visio) | Princeton University |
| Maria-Angeles ZURRO (visio) | Universidad Autonoma de Madrid |
| Michaå‚ ZWIERZYNSKI | Warsaw University of Technology |