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Results tagged with at.algebraic-topology
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user 14243
Homotopy theory, homological algebra, algebraic treatments of manifolds.
1
vote
0
answers
438
views
Lefschetz duality for manifolds with boundary / stratified spaces
Let $M$ be a manifold with corners. Let $F_p$ denote the union of all the codimension $i \geq p$ faces of $M$.
Then I have read that there is a form of Lefschetz duality that says that there is an is …
3
votes
1
answer
747
views
High connectivity arguments for simplicial complexes
I am wondering if there are "elementary" ways to check for $n$-connectedness of simplicial complexes in terms of simple conditions on vertices.
For example
Let $X$ be the curve complex on a surface …