List questions from convex-geometry

Published on 22 Mar 2026 - 8:04

421

Views

Is the positive linear combinations of pseudoconvex functions pseudoconvex?

Published on 06 Apr 2018 - 5:24

21

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Name & known properties for sets with certain convexity-type property

Published on 07 Apr 2018 - 1:54

112

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Convex Cones are closed under addition, can we infer from $A + B \in C$ that $A, B \in C$?

Published on 07 Apr 2018 - 14:29

179

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Is there any difference between star-convex and radial?

Published on 08 Apr 2018 - 0:00

389

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Showing the kernel of a set $X\subset \Bbb R^2$ is convex

Published on 11 Apr 2018 - 2:10

65

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Find the boundary of certain set

Published on 12 Apr 2018 - 4:41

359

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$ a+b+c=0,\ a^2+b^2+c^2=1$ implies $ a^4+b^4+c^4=\frac{1}{2}$

Published on 13 Apr 2018 - 17:42

467

Views

Is the Euclidean distance from $\text{SO}(n)$ approximately convex?

Published on 15 Apr 2018 - 6:20

154

Views

Orthogonal projection onto (general) simplex

Published on 15 Apr 2018 - 15:02

625

Views

Convergence of convex sets in the complementary Hausdorff metric and in the usual Hausdorff metric

Published on 21 Mar 2026 - 22:27

57

Views

A problem regarding a convex closed set

Published on 23 Apr 2018 - 17:07

69

Views

Isometric embedding of $\mathbb{E}^3$ into Finsler space

Published on 19 Mar 2026 - 20:24

295

Views

Determining the polar of the following set:

Published on 25 Apr 2018 - 0:06

674

Views

Linear algebra characterization of when half-spaces' intersection is bounded.

Published on 25 Apr 2018 - 16:18

List Question

Can we partition the plane like this?

Is the positive linear combinations of pseudoconvex functions pseudoconvex?

Name & known properties for sets with certain convexity-type property

Convex Cones are closed under addition, can we infer from $A + B \in C$ that $A, B \in C$?

Is there any difference between star-convex and radial?

Showing the kernel of a set $X\subset \Bbb R^2$ is convex

Find the boundary of certain set

$ a+b+c=0,\ a^2+b^2+c^2=1$ implies $ a^4+b^4+c^4=\frac{1}{2}$

Is the Euclidean distance from $\text{SO}(n)$ approximately convex?

Orthogonal projection onto (general) simplex

Convergence of convex sets in the complementary Hausdorff metric and in the usual Hausdorff metric

A problem regarding a convex closed set

Isometric embedding of $\mathbb{E}^3$ into Finsler space

Determining the polar of the following set:

Linear algebra characterization of when half-spaces' intersection is bounded.

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