3 papers
math.CO2026
Homology of Vietoris-Rips complexes of hypercube graphs via group actions
Federico Galetto, Jonathan Montaño, Zoe Wellner
The Vietoris-Rips complex of a metric space is the simplicial complex whose faces are the subsets of points with pairwise distance bounded above by a given scale . In this paper…
math.CO2026
Classification of equiangular lines with fixed angle
Theodore Gossett, Zilin Jiang, Adam Teets +1
We determine the maximum number of equiangular lines with fixed angle for in -dimensional Euclidean space: $2,3,4,6,8,10,14,15,16,17,18…
math.CO2025
Covering and labeling generalizations of the Borsuk-Ulam theorem
Florian Frick, Zoe Wellner
We prove multiple generalizations of Fan's combinatorial labeling result for sphere triangulations. This can be seen as a comprehensive extension of the Borsuk--Ulam theorem. In ty…