User erz

48 votes

4 answers

6k views

Consequences of lack of rigour [closed]

asked Feb 27, 2019 at 11:36

39 votes

2 answers

2k views

How to make a sandwich from just one piece of bread?

asked Feb 23, 2017 at 9:40

14 votes

1 answer

453 views

Does existence of midpoints imply intrinsic?

asked Jan 8, 2017 at 7:51

13 votes

2 answers

2k views

When can we divide continuous functions?

asked Jul 31, 2022 at 19:03

11 votes

0 answers

389 views

Von Neumann Inequality in Banach spaces

asked Mar 4, 2020 at 6:56

9 votes

2 answers

755 views

Is limit of null-homotopic maps null-homotopic?

asked Apr 3, 2020 at 16:40

9 votes

1 answer

662 views

Holomorphic Sard's theorem?

asked Oct 4, 2017 at 22:22

9 votes

2 answers

763 views

Parallelepiped is defined by the volumes of its faces

asked May 13, 2018 at 7:53

9 votes

1 answer

276 views

Is a Banach lattice isomorphic to a Hilbert space in fact a Hilbert lattice?

asked Dec 16, 2020 at 3:51

7 votes

3 answers

901 views

What are journal rankings that employers look at? [closed]

asked Mar 20 at 9:00

7 votes

1 answer

402 views

Is any dual metrizable locally convex space a Frechet space?

asked Aug 31, 2017 at 14:29

7 votes

1 answer

229 views

Retracting off a compact set

asked May 9, 2020 at 8:24

7 votes

2 answers

616 views

Which topological spaces contain dense simply connected subspace?

asked May 3, 2017 at 14:26

6 votes

1 answer

321 views

Derivatives of norm of vector-valued holomorphic functions

asked May 5, 2017 at 9:18

6 votes

1 answer

506 views

Map which is null-homotopic on compacts

asked Apr 5, 2020 at 6:20

6 votes

2 answers

240 views

Continuity of a differential of a Banach-valued holomorphic map

asked Jun 28, 2019 at 8:00

6 votes

1 answer

203 views

How to calculate the volume of a section of a convex body?

asked May 28, 2019 at 11:46

6 votes

1 answer

567 views

Is restriction a closed map?

asked Jul 1, 2018 at 8:29

6 votes

1 answer

246 views

Is the projectivization of a topological vector space Tychonoff?

asked Nov 17, 2021 at 14:16

5 votes

2 answers

247 views

Is there a topology that makes every basic sequence null?

asked Jan 6, 2021 at 6:53

5 votes

1 answer

206 views

If a subspace $F$ is contained in a subspace $G$, and $H$ is close to $G$, can we choose a subspace of $H$ close to $F$?

asked Dec 16, 2020 at 3:48

5 votes

0 answers

144 views

Do products of distance functions separate points?

asked Aug 3, 2020 at 10:36

5 votes

1 answer

329 views

Does every open set contain a dense $F_{\sigma}$ subset?

asked Sep 14, 2021 at 6:40

5 votes

1 answer

379 views

Hilbert representation of a bilinear form

asked Sep 22, 2018 at 3:43

5 votes

0 answers

350 views

How to calculate the volume of a parallelepiped in a normed space?

asked May 24, 2019 at 6:37

5 votes

1 answer

395 views

Holomorphic Sard's theorem 2

asked Nov 8, 2017 at 9:08

5 votes

3 answers

730 views

Is it possible to connect every compact set?

asked May 5, 2020 at 2:42

5 votes

0 answers

104 views

On the embedding of manifolds into infinite-dimensional spaces

asked Apr 23, 2017 at 4:58

5 votes

1 answer

258 views

Generating the topology of a manifold

asked Jul 11, 2017 at 22:26

5 votes

2 answers

448 views

Space of curves

asked Jan 31, 2017 at 6:34

Stack Exchange Network

110 Questions

Consequences of lack of rigour [closed]

How to make a sandwich from just one piece of bread?

Does existence of midpoints imply intrinsic?

When can we divide continuous functions?

Von Neumann Inequality in Banach spaces

Is limit of null-homotopic maps null-homotopic?

Holomorphic Sard's theorem?

Parallelepiped is defined by the volumes of its faces

Is a Banach lattice isomorphic to a Hilbert space in fact a Hilbert lattice?

What are journal rankings that employers look at? [closed]

Is any dual metrizable locally convex space a Frechet space?

Retracting off a compact set

Which topological spaces contain dense simply connected subspace?

Derivatives of norm of vector-valued holomorphic functions

Map which is null-homotopic on compacts

Continuity of a differential of a Banach-valued holomorphic map

How to calculate the volume of a section of a convex body?

Is restriction a closed map?

Is the projectivization of a topological vector space Tychonoff?

Is there a topology that makes every basic sequence null?

If a subspace $F$ is contained in a subspace $G$, and $H$ is close to $G$, can we choose a subspace of $H$ close to $F$?

Do products of distance functions separate points?

Does every open set contain a dense $F_{\sigma}$ subset?

Hilbert representation of a bilinear form

How to calculate the volume of a parallelepiped in a normed space?

Holomorphic Sard's theorem 2

Is it possible to connect every compact set?

On the embedding of manifolds into infinite-dimensional spaces

Generating the topology of a manifold

Space of curves