Question

How to characterize the group of homeomorphisms of unit disk in terms of the group of homeomorphisms of plane?

score 188 · Answer 1 · 2026-05-10 19:40:34

188

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How to characterize the group of homeomorphisms of unit disk in terms of the group of homeomorphisms of plane?

Published on 10 May 2026 - 19:40

score 68 · Answer 2 · 2026-04-13 20:31:47

68

Views

Declaring a metric space as a universe.

Published on 13 Apr 2026 - 20:31

score 47 · Answer 3 · 2026-05-10 15:29:07

47

Views

Continuous injections of nice spaces into $\ell^2$

Published on 10 May 2026 - 15:29

score 221 · Answer 4 · 2026-04-13 03:00:03

221

Views

A basis for topology of $\mathbb R^2$

Published on 13 Apr 2026 - 3:00

score 36 · Answer 5 · 2026-04-15 08:48:19

36

Views

Proving compactness and connectedness of a set

Published on 15 Apr 2026 - 8:48

score 551 · Answer 6 · 2026-04-14 01:38:57

551

Views

Free resolution for finitely generated module over integral group ring $ZG$

Published on 14 Apr 2026 - 1:38

score 3k · Answer 7 · 2026-05-10 20:06:23

3k

Views

Homeomorphism between the unit disc and the unit square

Published on 10 May 2026 - 20:06

score 169 · Answer 8 · 2026-04-16 13:54:42

169

Views

$ \operatorname{Ext}_{k[x]}^n(k,k)$ for a field $k$

Published on 16 Apr 2026 - 13:54

score 35 · Answer 9 · 2026-04-17 02:36:12

35

Views

Check axioms of separation $T_{0},\, T_{1},\, T_{2}, \,T_{3}, \, T_{3\frac{1}{2}}\, T_{4}$

Published on 17 Apr 2026 - 2:36

score 34 · Answer 10 · 2026-04-12 01:13:22

34

Views

Complete metric spaces question

Published on 12 Apr 2026 - 1:13

score 72 · Answer 11 · 2026-05-10 21:58:36

72

Views

Example of a homeomorphism of a plane which fixes unit circle point wise

Published on 10 May 2026 - 21:58

score 129 · Answer 12 · 2026-05-14 14:24:10

129

Views

Avoiding choice in proving "Sequential compactness implies Lebesgue Number Lemma"

Published on 14 May 2026 - 14:24

score 103 · Answer 13 · 2026-04-13 23:18:58

103

Views

$C_p$ space topology

Published on 13 Apr 2026 - 23:18

score 45 · Answer 14 · 2026-04-13 08:33:15

45

Views

Hereditary product of non-hereditary cardinal functions

Published on 13 Apr 2026 - 8:33

score 215 · Answer 15 · 2026-05-10 15:27:40

215

Views

A boolean algebra is countable iff the Stone space is separable

Published on 10 May 2026 - 15:27

List Question

How to characterize the group of homeomorphisms of unit disk in terms of the group of homeomorphisms of plane?

Declaring a metric space as a universe.

Continuous injections of nice spaces into $\ell^2$

A basis for topology of $\mathbb R^2$

Proving compactness and connectedness of a set

Free resolution for finitely generated module over integral group ring $ZG$

Homeomorphism between the unit disc and the unit square

$ \operatorname{Ext}_{k[x]}^n(k,k)$ for a field $k$

Check axioms of separation $T_{0},\, T_{1},\, T_{2}, \,T_{3}, \, T_{3\frac{1}{2}}\, T_{4}$

Complete metric spaces question

Example of a homeomorphism of a plane which fixes unit circle point wise

Avoiding choice in proving "Sequential compactness implies Lebesgue Number Lemma"

$C_p$ space topology

Hereditary product of non-hereditary cardinal functions

A boolean algebra is countable iff the Stone space is separable

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