Gergely Ambrus: Piercing the chessboard

Description of video

Date: 12/3/21
Speaker :Ambrus Gergely
How many lines are needed to pierce each cell of the n*n chessboard? We give nontrivial upper and lower bounds, study related problems, and present an intriguing conjecture on the optimal number of lines. Joint work with I. Bárány, P. Frankl and D. Varga.