Mathematics
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Sumanta
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All Questions Answers
Score Newest
question
27
Compactness of a metric space
Sep 21, 2018
answer
15
Retraction of the Möbius strip to its boundary
Sep 17, 2019
question
13
Covering image of a connected CW-complex need not be a CW-complex.
Jan 11, 2021
question
13
Topologist's sine curve is a simply-connected space
Nov 8, 2020
answer
11
Let $f:\mathbb{R}\to(0,\infty)$ be a differentiable function. For all $x\in\mathbb{R}$ $f'(x)=f(f(x)).$ Then show that such function does not exists
Jul 20, 2020
answer
10
Prove that $\operatorname{SL}(n,\Bbb R)$ is connected.
Jun 21, 2020
question
10
Loch Ness monster and Jacob's Ladder Surfaces are NOT homeomorphic
Sep 6, 2020
question
9
$4$-manifold with fundamental group $\Bbb Z/4\Bbb Z$
Sep 15, 2020
question
8
Topological rigidity of some non-compact surfaces
Sep 28, 2020
question
7
Any two non-separating curves on a surface are equivalent
Dec 29, 2020
Top network posts
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14
Almost all non-negative real numbers have only finitely many multiples lying in a measurable set with finite measure
13
Covering image of a connected CW-complex need not be a CW-complex
8
All non-compact simply connected $2$-manifolds with boundary
6
Borel conjecture and arbitrary surface

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