User Taras Banakh

7 votes

1 answer

366 views

The diamond principle for functors

asked Jan 23, 2020 at 8:40

7 votes

0 answers

177 views

Asymptotically discrete ultrafilters

asked Mar 26, 2019 at 8:45

7 votes

0 answers

172 views

Countable network vs countable Borel network

asked Jan 9, 2019 at 14:40

7 votes

1 answer

393 views

On norming weakly$^*$ sequences in the dual of the Banach space $c_0$

asked Jun 2, 2019 at 18:09

7 votes

0 answers

138 views

The smallest cardinality of a cover of a group by algebraic sets

asked Aug 15, 2022 at 9:34

7 votes

2 answers

2k views

What is a good definition of a mathematical structure?

asked May 21, 2020 at 11:21

7 votes

1 answer

164 views

A selection principle in measure theory

asked Sep 12, 2020 at 10:20

7 votes

3 answers

498 views

Product-one sets in non-commutative groups

asked Jun 26, 2021 at 15:02

7 votes

1 answer

347 views

A corollary of the affine Desargues axiom

asked Aug 21, 2023 at 13:59

7 votes

1 answer

457 views

The existence of definable subsets of finite sets in NBG

asked Apr 11, 2023 at 3:42

7 votes

2 answers

646 views

A generic metric on $X\cup\mathbb Z$

asked May 11, 2023 at 11:52

7 votes

1 answer

521 views

The place and year of birth of Henry Maurice Sheffer

asked Mar 20, 2023 at 8:26

7 votes

1 answer

331 views

A metric characterization of Hilbert spaces

asked Mar 22, 2023 at 11:22

6 votes

1 answer

603 views

A strong form of the Axiom Schema of Replacement

asked Apr 3, 2023 at 21:32

6 votes

0 answers

153 views

Does every Tarski plane embed into a 3-dimensional Tarski space?

asked Jan 11, 2023 at 21:40

6 votes

3 answers

551 views

Hahn-Banach Theorem for convex polytopes and their supporting hyperplanes

asked Jul 2, 2023 at 12:14

6 votes

1 answer

541 views

Does Playfair imply Proclus?

asked Jul 9, 2023 at 6:56

6 votes

1 answer

243 views

The continuity of certain maps on compact Hausdorff spaces

asked Apr 17, 2023 at 11:24

6 votes

1 answer

500 views

A characterization of metric spaces, isometric to subspaces of Euclidean spaces

asked Apr 22, 2023 at 18:34

6 votes

1 answer

374 views

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

asked Jul 28, 2023 at 2:36

6 votes

0 answers

235 views

A standard name for the algebraic structure on a projective line?

asked Apr 9 at 6:08

6 votes

1 answer

384 views

What is the cardinality of liners of rank 4? Is it always equal 27?

asked Oct 5, 2023 at 17:07

6 votes

1 answer

242 views

A monotone countably unbounded function from $\omega^\omega$ to $\omega^{\omega_1}$

asked Jun 7, 2020 at 6:59

6 votes

1 answer

423 views

What is the Borel complexity of this set?

asked Jun 18, 2020 at 14:25

6 votes

1 answer

191 views

Steinhaus number of a group

asked Aug 18, 2022 at 20:06

6 votes

0 answers

190 views

The highest degree of a polynomial on a finite group

asked Sep 2, 2022 at 14:40

6 votes

1 answer

282 views

The algebraic structure of a line in a (Tarski) plane

asked Oct 21, 2022 at 6:45

6 votes

0 answers

111 views

Does the Segment-Circle Axiom imply the Circle-Circle Axiom in a non-Euclidean Tarski plane?

asked Oct 22, 2022 at 10:31

6 votes

0 answers

68 views

Vector algebra in a Tarski space

asked Oct 23, 2022 at 9:41

6 votes

1 answer

185 views

A name for semigroups in which left and right principal ideals coincide

asked Feb 8, 2022 at 22:17

Stack Exchange Network

351 Questions

The diamond principle for functors

Asymptotically discrete ultrafilters

Countable network vs countable Borel network

On norming weakly$^*$ sequences in the dual of the Banach space $c_0$

The smallest cardinality of a cover of a group by algebraic sets

What is a good definition of a mathematical structure?

A selection principle in measure theory

Product-one sets in non-commutative groups

A corollary of the affine Desargues axiom

The existence of definable subsets of finite sets in NBG

A generic metric on $X\cup\mathbb Z$

The place and year of birth of Henry Maurice Sheffer

A metric characterization of Hilbert spaces

A strong form of the Axiom Schema of Replacement

Does every Tarski plane embed into a 3-dimensional Tarski space?

Hahn-Banach Theorem for convex polytopes and their supporting hyperplanes

Does Playfair imply Proclus?

The continuity of certain maps on compact Hausdorff spaces

A characterization of metric spaces, isometric to subspaces of Euclidean spaces

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

A standard name for the algebraic structure on a projective line?

What is the cardinality of liners of rank 4? Is it always equal 27?

A monotone countably unbounded function from $\omega^\omega$ to $\omega^{\omega_1}$

What is the Borel complexity of this set?

Steinhaus number of a group

The highest degree of a polynomial on a finite group

The algebraic structure of a line in a (Tarski) plane

Does the Segment-Circle Axiom imply the Circle-Circle Axiom in a non-Euclidean Tarski plane?

Vector algebra in a Tarski space

A name for semigroups in which left and right principal ideals coincide