Mathematics
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Ludwik's user avatar
Ludwik
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Score Newest
question
3
$\langle x,y \rangle (\lVert x \rVert + \lVert y \rVert) \leq \lVert x \rVert \lVert y \rVert \lVert x+y \rVert$ [duplicate]
Sep 20, 2020
question
3
Applications of Strong Whitney Embedding
Feb 16
question
2
If $E$ is a Lebesgue measurable set in $\mathbb{R}$ with positive measure, the set $E-E = \{ x-y : x,y \in E \}$ is also measurable?
Nov 12, 2018
question
2
Path-connected symmetric product $\frac{X^n}{S_n}$ implies path-connected space X?
Dec 28, 2019
question
2
Closed path trough only finitely many times an open subset disjoint of his base point?
Jan 22, 2021
question
2
Retraction of finite union of open convex sets onto polygonal path
Jan 23, 2021
question
2
About double points of an immersion
Mar 1, 2022
question
2
Local intersection of a tubular neighborhood with a fixed tangent space
Aug 21, 2022
answer
2
Quotient rule for multivariable functions
Sep 8, 2020
question
1
Equivalent condition to $M_1 \cong M_2 \times M_3$ in a short exact sequence of modules.
Aug 28, 2020
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How to formalize this isotopy?

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