Algebraic and enumerative combinatorics seminar-Leo Jiang

Thursday, June 26, 2025 2:30 pm - 3:30 pm EDT (GMT -04:00)
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Title:Oriented graded Möbius algebras

Speaker Leo Jiang
Affiliation University of Toronto
Location MC 5479

Abstract:The graded Möbius algebra B(M) of a matroid M contains much combinatorial information about the flats of M. Its algebraic properties were instrumental in the proof of the Dowling—Wilson top-heavy conjecture. We will introduce a skew-commutative analogue OB(M) associated to every oriented matroid M, and discuss its algebraic structure. This is part of ongoing work joint with Yu Li.

There will be a pre-seminar presenting relevant background at the beginning graduate level starting at 1:30pm