- Feodor Dragan (Kent State University) at LIS (1/06/2023-12/07/2023)
- Seminar talks and one week visits in 2022 and 2023 at LIS, Marseille of S. Vilmin, C. Geniet, B. Bergougnoux, M. Mari, J.-F. Raymond, L. Viennot, Chakraborty Dibyayan, G. Ducoffe, M. Caoduro, U. Giocanti, V. Bartier.
- Jérémie Chalopin and Victor Chepoi visit of Kolja Knauer at Universitat Barcelona (one week in October 2022).
- Victor Chepoi at 2nd Joint Congress of Mathematics co-organized by the American Mathematical Society, the European Mathematical Society and the Société Mathématique de France (18-22 July, 2022).
- Kolja Knauer visit of Victor Chepoi and Manon Philibert at LIS, Marseille (one week in June 2021).
- Jérémie Chalopin (LIS) at ICALP 2019, 8-12 July 2019, Patras, Greece
- Manoj Changat (University of Kerala, India) at LIS (20/06/19-01/07/19)
- Jérémie Chalopin (LIS) at Simons Semester "Geometric and Analytic Group Theory", IMPAN Warsaw (13/05/19-22/05/19)
- Victor Chepoi (LIS) at Simons Semester "Geometric and Analytic Group Theory", IMPAN Warsaw (06/05/19-17/05/19)
- Seminar talks of S. Margolis, K. Dutta, C. Maria, G. Dias da Fonseca, M. Rosenfeld, F. Dross, F. Mc Inerney, V. Gledel, M. Dien, V. Garnero, J. Bastos, A. Dailly at LIS
- Pedro Santos (University of Fortaleza) at LIS (01/04/19-30/04/19)
- Kolja Knauer (LIS) at Order & Geometry Workshop, Ciążeń Palace, Poland (19/09/18-22/09/18)
- Kolja Knauer (LIS) at FMF, Ljubliana (25/08/18-01/09/18)
- Guyslain Naves (LIS) at the 10th International Colloquium on Graph Theory and Combinatorics, Lyon (09/07/18-13/07/18)
- Sébastien Ratel (LIS) at the 10th International Colloquium on Graph Theory and Combinatorics, Lyon (09/07/18-13/07/18)
- Koyo Hayashi (Tokyo University, Tokyo) at LIS (04/07/18-09/07/18)
- Michał Lasoń (Universität Bern, Bern) at LIS (01/07/18-07/07/18)
- Jérémie Chalopin (LIS) at SoCG, Budapest (11/06/18-14/06/18)
- Damian Osajda (Uniwersytet Wroclawski, Wroclaw) at LIS (28/04/18-04/05/18)
- Kolja Knauer (LIS) at ULB, Bruxelles (23/04/18-27/04/18)
- Jean-Florent Raymond (TU, Berlin) at LIS (26/03/18-02/04/18)
- Nima Hoda (McGill University, Montreal) at LIS (18/03/18-22/03/18)