*********************************** * Princeton Discrete Math Seminar * *********************************** Speaker: James Davies (U. Waterloo) Thursday April 30, 3:00 in Fine Hall 224. Zoom link https://princeton.zoom.us/j/95792234705?, password needed and will be mailed to the seminar maillist. Title: Vertex-minor-closed classes are chi-bounded We prove a conjecture of Geelen that vertex-minor-closed classes of graphs are chi-bounded. We will define vertex-minors and chi-boundedness in the talk. ---------------------------------- Next week: Summer break Anyone wishing to be added to or removed from this mailing list should contact Paul Seymour (pds@math.princeton.edu)