Jaiung Jun (전재웅), The Hall algebra of the category of matroids
Room 1401, Bldg. E6-1, KAISTTo an abelian category A satisfying certain finiteness conditions, one can associate an algebra H_A (the Hall algebra of A) which encodes the structures of the space of extensions between objects in A. For a non-additive setting, Dyckerhoff and Kapranov introduced the notion of proto-exact categories, as a non-additive generalization of an exact category, which …