User Alex Ravsky

11 votes

Accepted

Non meager rectangle

answered Jun 15, 2015 at 19:22

10 votes

Accepted

Desargues ten point configuration $D_{10}$ in LaTeX

answered Jul 28, 2023 at 17:29

10 votes

Dividing a cake between $n-1$, $n$, or $n+1$ guests

answered Aug 14, 2023 at 13:55

9 votes

Accepted

Are topological PID's Noetherian?

answered Sep 22, 2023 at 13:18

9 votes

Mark some vectors in $\mathbb{R}^n$ in a way that every orthonormal basis has an odd number of marked vectors

answered Jul 31 at 3:41

7 votes

Accepted

The cardinal characteristic $\mathfrak r_{(X,f)}$ of a dynamical system

answered Oct 5, 2021 at 11:47

7 votes

Accepted

Convergent net in a quasi-uniform space which is not Cauchy

answered Oct 1, 2017 at 9:01

6 votes

Solving algebraic problems with topology

answered Jun 15, 2015 at 17:45

6 votes

If the Hausforff dimension of the graph of a function $u$ is $N$ and $\tilde u = u$ a.e. then $\dim_H \mathrm{graph} \, \tilde u = N$ too

answered Apr 10, 2019 at 6:18

6 votes

Minimum number of common edges of triangulations

answered Sep 30, 2023 at 18:23

6 votes

Accepted

A conjecture related to Frankl's conjecture

answered Dec 4 at 2:16

5 votes

Accepted

Congruential equidistribution, prime numbers, and Goldbach conjecture

answered Jul 19, 2020 at 18:45

5 votes

Accepted

If $A>B>0$, can we always find a positive real number $\alpha$, $0<\alpha < 1$ such that $\alpha A \geq B $?

answered Jun 7, 2015 at 5:17

5 votes

sets without perfect subset in a non-separable completely metrizable space

answered Dec 12, 2013 at 15:50

4 votes

Is every regular paratopological group completely regular?

answered Oct 7, 2014 at 15:25

4 votes

Suppose $(G,\mathcal T)$ is a paratopological group and $a,b\in G$ and every neighborhood of $a$ contains $b$. Can we say every neighborhood of $b$ contains $a$?

answered Jun 17, 2015 at 3:46

4 votes

Accepted

Construct closed chain of $k$-gon around $n$ points-$n, k$ are odd primes number

answered Aug 13, 2020 at 16:55

4 votes

Is there a non-trivial topological group structure of $\mathbb{Z}$?

answered Jun 28, 2017 at 7:10

4 votes

Accepted

How flexible is the infinite-dimensional torus?

answered Feb 13, 2020 at 11:59

4 votes

Accepted

Extremizing sequence consists of two elements

answered Nov 8 at 7:35

4 votes

Accepted

Independent sets in complement of Kneser graphs

answered Jun 17, 2020 at 7:25

3 votes

Connected geometric thickness two

answered Oct 7, 2023 at 9:48

3 votes

Mutual metric projection

answered Jul 1 at 11:36

3 votes

Accepted

Does a continuous map from $\kappa^\omega$ to $[0,1]^\omega$ have a non-scattered fiber?

answered Feb 21, 2020 at 12:03

3 votes

Accepted

Nearly eventually almost periodic functions

answered Apr 30, 2019 at 13:20

3 votes

Accepted

Relationship between minimum vertex cover and matching width

answered Oct 7, 2020 at 18:13

3 votes

Is it worthwhile to give off-topic talks?

answered Dec 16, 2013 at 4:06

3 votes

Accepted

Embedding abelian cancellative Hausdorff topological semigroups into abelian Hausdorff topological groups

answered Nov 13, 2015 at 21:35

3 votes

Accepted

A question on quasitopological group

answered Jun 14, 2018 at 12:02

2 votes

An infinite set in a compact space

answered Sep 8, 2015 at 10:27

Stack Exchange Network

65 Answers

Non meager rectangle

Desargues ten point configuration $D_{10}$ in LaTeX

Dividing a cake between $n-1$, $n$, or $n+1$ guests

Are topological PID's Noetherian?

Mark some vectors in $\mathbb{R}^n$ in a way that every orthonormal basis has an odd number of marked vectors

The cardinal characteristic $\mathfrak r_{(X,f)}$ of a dynamical system

Convergent net in a quasi-uniform space which is not Cauchy

Solving algebraic problems with topology

If the Hausforff dimension of the graph of a function $u$ is $N$ and $\tilde u = u$ a.e. then $\dim_H \mathrm{graph} \, \tilde u = N$ too

Minimum number of common edges of triangulations

A conjecture related to Frankl's conjecture

Congruential equidistribution, prime numbers, and Goldbach conjecture

If $A>B>0$, can we always find a positive real number $\alpha$, $0<\alpha < 1$ such that $\alpha A \geq B $?

sets without perfect subset in a non-separable completely metrizable space

Is every regular paratopological group completely regular?

Suppose $(G,\mathcal T)$ is a paratopological group and $a,b\in G$ and every neighborhood of $a$ contains $b$. Can we say every neighborhood of $b$ contains $a$?

Construct closed chain of $k$-gon around $n$ points-$n, k$ are odd primes number

Is there a non-trivial topological group structure of $\mathbb{Z}$?

How flexible is the infinite-dimensional torus?

Extremizing sequence consists of two elements

Independent sets in complement of Kneser graphs

Connected geometric thickness two

Mutual metric projection

Does a continuous map from $\kappa^\omega$ to $[0,1]^\omega$ have a non-scattered fiber?

Nearly eventually almost periodic functions

Relationship between minimum vertex cover and matching width

Is it worthwhile to give off-topic talks?

Embedding abelian cancellative Hausdorff topological semigroups into abelian Hausdorff topological groups

A question on quasitopological group

An infinite set in a compact space