Geva Yashfe's user avatar
Geva Yashfe's user avatar
Geva Yashfe's user avatar
Geva Yashfe
  • Member for 7 years, 7 months
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18 votes
Accepted

Is there a closed manifold whose universal cover is $\mathbb{R}^n\setminus\{x_1, \dots, x_k\}$ for some $k > 1$?

13 votes
Accepted

Determining whether a lattice is the face lattice of a polytope - NP hard or undecidable?

8 votes
Accepted

On the Galois group of the compositions of polynomials

6 votes
Accepted

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 $\pi_1$?

5 votes

How can we make precise the notion that a finite-dimensional vector space is not canonically isomorphic to its dual via category theory?

5 votes
Accepted

Reference request: Kleiman's proof of Snapper's Lemma

5 votes

Boundedness of total current in electrical network

4 votes

Book on manifolds from a sheaf-theoretic/locally ringed space PoV

3 votes
Accepted

Does any real projective plane incidence theorem follow from axioms?

3 votes

Do all orbits have the same dimension?

2 votes
Accepted

The relationship between facets of an inscribed polytope and those facets' shadows

2 votes

A notion of 2-dimensional tree

2 votes

Inductive proof of a version of Nakayama's lemma

2 votes

The geometry of the action of the semidirect product

2 votes
Accepted

The local flatness criterion

1 vote

Extending submodular functions from a sublattice

1 vote
Accepted

Planar duality generalized to embedded simplicial complexes

1 vote

Bounds on the probability of k-of-n events in terms of bounds on single and pairwise probabilities

1 vote

On Gromov's proof of the systolic inequality $\operatorname{Sys}_1(M)\leq 6\operatorname{FillRad}(M)$

1 vote
Accepted

Question about the proof of Gromov's theorem in geodesic flows