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math.GT2025
The combinatorial transverse intersection algebra
Daniel An, Ruth Lawrence, Dennis Sullivan
This paper constructs (with challenging obstacles) on the three torus with its cubical decomposition: Firstly, a combinatorial graded intersection algebra (graded by the codimensio…
math.GT2004★ 6 cited
The Structure and Singularities of Arc Complexes
R. C. Penner
A classical combinatorial fact is that the simplicial complex consisting of disjointly embedded chords in a convex planar polygon is a sphere. For any surface F with non-empty boun…