2 papers
math.CO2026
Homological algebra and poset versions of the Garland method
Eric Babson, Volkmar Welker
Garland introduced a vanishing criterion for a characteristic zero cohomology group of a locally finite and locally connected simplicial complex. The criterion is based on the spec…
math.CO2024
A Central Limit Theorem for Repeating Patterns
Aaron Abrams, Eric Babson, Henry Landau +2
We prove a central limit theorem for the length of the longest subsequence of a random permutation which follows one of a class of repeating patterns. This class includes every fix…