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Sumanta
  • Member for 7 years, 5 months
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Top posts

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20
Homotopy equivalent but non-homeomorphic high-dimensional manifolds
Apr 6, 2024
14
Almost all non-negative real numbers have only finitely many multiples lying in a measurable set with finite measure
Nov 30, 2019
14
Covering image of a connected CW-complex need not be a CW-complex
Jan 13, 2021
8
All non-compact simply connected $2$-manifolds with boundary
Dec 5, 2020
8
Non-compact three-manifolds with the same proper homotopy type are homeomorphic?
Dec 16, 2022
7
Stallings' binding tie
Sep 8, 2021
7
If the number of ends of Freudenthal space is infinite, then its space of ends is homeomorphic to the Cantor set?
Dec 5, 2022
6
Borel conjecture and arbitrary surface
Aug 30, 2020
6
What is the minimum $n$ for which $\Bbb H^3$ can be isometrically embedded in $\Bbb R^n$ as a bounded set?
Jan 7, 2023
5
Earliest known proof of "Any degree one self-map of an orientable connected finite-type non-compact surface is homotopic to a homeomorphism"
Sep 5, 2022

Top network posts

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26
Compactness of a metric space
18
Retraction of the Möbius strip to its boundary
15
Prove that $\operatorname{SL}(n,\Bbb R)$ is connected.
15
Topologist's sine curve is a simply-connected space
14
Covering image of a connected CW-complex need not be a CW-complex.