2 papers
math.CO2026
Topological Zeta Functions of Matroids: Operations and Computations
Dawit Mengesha, Robert Miranda, Brian Sun
The topological zeta function of a matroid is a rational function as well as a valuative invariant of the matroid, encoding rich combinatorial information. We analyze topological z…
math.GT2026
Twisted Alexander Polynomials and Fibered Classes in Ribbon Homology Cobordisms
Brian Sun
Let and be two compact 3-manifolds with empty or toroidal boundary. A 4-dimensional ribbon homology cobordism is a homologically trivial cobordism built with 1-handles…