- 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)