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Geva Yashfe's user avatar
Geva Yashfe's user avatar
Geva Yashfe's user avatar
Geva Yashfe
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18
Is there a closed manifold whose universal cover is $\mathbb{R}^n\setminus\{x_1, \dots, x_k\}$ for some $k > 1$?
Mar 30, 2022
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14
Determining whether a lattice is the face lattice of a polytope - NP hard or undecidable?
Oct 17, 2022
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8
On the Galois group of the compositions of polynomials
Jun 5, 2021
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6
If cohomology theory corresponds to intersection theory, valuation theory corresponds to -?
Oct 23, 2020
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6
Does the union of the subcomplexes of $X$ that contain a given subcomplex and whose inclusion in $X$ is trivial on $\pi_1$, have trivial $\pi_1$?
Oct 15, 2020
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5
Boundedness of total current in electrical network
May 26, 2020
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5
How can we make precise the notion that a finite-dimensional vector space is not canonically isomorphic to its dual via category theory?
Mar 9, 2021
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5
Reference request: Kleiman's proof of Snapper's Lemma
Mar 29, 2021
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4
Book on manifolds from a sheaf-theoretic/locally ringed space PoV
Feb 10, 2020
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3
Inductive proof of a version of Nakayama's lemma
Nov 9, 2019
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Is an immersion an embedding almost everywhere?