Please advertise this talk at your home institution. Anyone is welcome to attend! 

YouTube recording: https://www.youtube.com/watch?v=aOpvWW1lBH8

Time: Wednesday, Nov 15 at 3pm ET
Zoom: https://gatech.zoom.us/j/8802082683

Speaker: Jim Geelen, University of Waterloo
Title: Average plane-size

Abstract: In 1941, Eberhard Melchior proved that the average line-length of a simple rank-3 real-representable matroid is less than three.  We discuss a long-overdue analogue of Melchior’s result that the average plane-size of a simple rank-4 real-representable matroid is bounded above by an absolute constant, unless the matroid is the direct-sum of two lines. This is joint work with Rutger Campbell and Matthew Kroeker.