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15
Math.TechQA.Club
2026-04-13 20:30:33
2.2k
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Homology group of S1
Published on
13 Apr 2026 - 20:30
#algebraic-topology
#homology-cohomology
1k
Views
Direct proof of version of Borsuk theorem
Published on
12 Apr 2026 - 18:31
#algebraic-topology
525
Views
Working out an example in Hatcher vol. $2$: Pullbacks of the Möbius Bundle
Published on
15 Apr 2026 - 23:53
#algebraic-topology
#vector-bundles
736
Views
The space $\Delta^n$ with all faces of the same dimension.
Published on
15 Apr 2026 - 14:15
#algebraic-topology
#homological-algebra
#homology-cohomology
91
Views
Homology of the fixed points of the singular complex of a G-space
Published on
15 Apr 2026 - 15:19
#algebraic-topology
#homological-algebra
1.3k
Views
A simple fundamental group
Published on
12 Apr 2026 - 14:10
#algebraic-topology
#fundamental-groups
272
Views
A question about full group C*-algebra
Published on
08 Apr 2026 - 6:51
#algebraic-topology
#operator-algebras
#c-star-algebras
#von-neumann-algebras
103
Views
Inequivalent Model Categories
Published on
16 Apr 2026 - 6:10
#algebraic-topology
#category-theory
#homotopy-theory
#model-categories
38
Views
Showing that a map can be deformed into the identity.
Published on
12 Apr 2026 - 12:54
#general-topology
#algebraic-topology
286
Views
fundamental group of a point and a sphere
Published on
12 Apr 2026 - 4:58
#algebraic-topology
110
Views
A question about the positive definite function
Published on
10 Apr 2026 - 3:35
#algebraic-topology
#operator-algebras
#c-star-algebras
#von-neumann-algebras
409
Views
Can a division algebra over $\mathbb{R}^3$ be used to construct a counterexample to the hairy ball theorem?
Published on
14 Apr 2026 - 19:13
#ring-theory
#algebraic-topology
477
Views
Ham-sandwich cut of red points and blue points in the plane.
Published on
16 Apr 2026 - 9:25
#combinatorics
#algebraic-topology
241
Views
About Fourier transform
Published on
11 Apr 2026 - 0:17
#algebraic-topology
#operator-algebras
#c-star-algebras
#von-neumann-algebras
28
Views
Can we interpret spherical polars as covering spaces?
Published on
10 Apr 2026 - 18:35
#multivariable-calculus
#algebraic-topology
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