May 2017: Boris Bukh is invited professor for one month. He is associate professor at the mathematics department of Carnegie Mellon University, in Pittsburg. He is a specialist of various aspects of combinatorics. He visited LIGM for a month in may-june 2017 to work with Xavier Goaoc and Alfredo Hubard on geometric partitioning problems, pattern avoidance in order-types and questions in incidence geometry arising from computer vision. He also gave a series of lectures on linear-algebraic methods in combinatorics.