ACO The ACO Seminar (2012-2013)

Jan 29, 4:30pm, Wean 8220
Boris Bukh, CMU
Convex and stairconvex geometries


Convex sets are combinatorially complicated because convexity is defined via addition and multiplication. Stairconvex sets are siblings of convex sets, whose definition involves no arithmetic, and that form a geometry of their own. I shall describe the solutions to several problems in classic combinatorial convexity that use stairconvex sets, and will mention the still-mysterious connections with algebraic topology and logic.

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