Question

If $L$ is a closed convex subset of compact convex set $K$, then the restriction map $A(K)\to A(L)$ is surjective

score 75 · Answer 1 · 2026-04-15 09:08:49

75

Views

If $L$ is a closed convex subset of compact convex set $K$, then the restriction map $A(K)\to A(L)$ is surjective

Published on 15 Apr 2026 - 9:08

score 72 · Answer 2 · 2026-04-29 12:31:09

72

Views

On Borel subsets of a topological space

Published on 29 Apr 2026 - 12:31

score 420 · Answer 3 · 2026-04-11 08:38:34

420

Views

An open set in complex plane is the countable union of compact sets and locally compact hausdorff

Published on 11 Apr 2026 - 8:38

score 334 · Answer 4 · 2026-04-09 16:15:45

334

Views

Not closed path-component

Published on 09 Apr 2026 - 16:15

score 132 · Answer 5 · 2026-04-09 04:02:26

132

Views

Does sheafification of bundles have a right adjoint?

Published on 09 Apr 2026 - 4:02

score 696 · Answer 6 · 2026-04-14 08:43:21

696

Views

If a continuous function on the reals is constant on a dense subset of a topological space $X$, then is constant everywhere

Published on 14 Apr 2026 - 8:43

score 49 · Answer 7 · 2026-04-15 23:21:34

49

Views

If $K_\epsilon=\bigcup_{z\in K}\overline{D_\epsilon (z)}$, $K_\epsilon$ is compact.

Published on 15 Apr 2026 - 23:21

score 184 · Answer 8 · 2026-04-14 07:47:08

184

Views

Proof that the Michael Line is Hausdorff ($T_{2}$)

Published on 14 Apr 2026 - 7:47

score 227 · Answer 9 · 2026-04-15 21:51:54

227

Views

10-gon as connected sum of tori or projective plane

Published on 15 Apr 2026 - 21:51

score 133 · Answer 10 · 2026-04-16 12:36:51

133

Views

Separation of closed sets with distance $>0$ by function $f \in C_b^k(\mathbb{R}^d)$

Published on 16 Apr 2026 - 12:36

score 95 · Answer 11 · 2026-04-15 10:34:07

Let $X$ be a topological space, and let $G\subseteq Homeo(X)$ be a group of homeomorphisms of $X$ where $G$ acts properly discontinuously

score 107 · Answer 12 · 2026-04-15 19:17:04

107

Views

Critical Points of Polynomial Map $f: \mathbb{PC}^1 \to \mathbb{PC}^1$

Published on 15 Apr 2026 - 19:17

score 84 · Answer 13 · 2026-04-17 06:23:38

84

Views

Retract of Compact $2$-manifold

Published on 17 Apr 2026 - 6:23

score 159 · Answer 14 · 2026-04-12 12:20:10

159

Views

Uncountable family of measurable functions and limits

Published on 12 Apr 2026 - 12:20

score 137 · Answer 15 · 2026-04-18 23:14:56

137

Views

Intuition for immersions and smooth embeddings

Published on 18 Apr 2026 - 23:14

List Question

If $L$ is a closed convex subset of compact convex set $K$, then the restriction map $A(K)\to A(L)$ is surjective

On Borel subsets of a topological space

An open set in complex plane is the countable union of compact sets and locally compact hausdorff

Not closed path-component

Does sheafification of bundles have a right adjoint?

If a continuous function on the reals is constant on a dense subset of a topological space $X$, then is constant everywhere

If $K_\epsilon=\bigcup_{z\in K}\overline{D_\epsilon (z)}$, $K_\epsilon$ is compact.

Proof that the Michael Line is Hausdorff ($T_{2}$)

10-gon as connected sum of tori or projective plane

Separation of closed sets with distance $>0$ by function $f \in C_b^k(\mathbb{R}^d)$

Let $X$ be a topological space, and let $G\subseteq Homeo(X)$ be a group of homeomorphisms of $X$ where $G$ acts properly discontinuously

Critical Points of Polynomial Map $f: \mathbb{PC}^1 \to \mathbb{PC}^1$

Retract of Compact $2$-manifold

Uncountable family of measurable functions and limits

Intuition for immersions and smooth embeddings

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