List questions from convex-geometry

Published on 12 Apr 2026 - 17:53

425

Views

Is the positive linear combinations of pseudoconvex functions pseudoconvex?

Published on 16 Apr 2026 - 17:56

24

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

Published on 16 Apr 2026 - 12:45

115

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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 16 Apr 2026 - 13:28

182

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Is there any difference between star-convex and radial?

Published on 11 Apr 2026 - 10:55

392

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

Published on 13 Apr 2026 - 13:51

69

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Find the boundary of certain set

Published on 13 Apr 2026 - 17:23

362

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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 17 Apr 2026 - 2:05

470

Views

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

Published on 15 Apr 2026 - 14:08

158

Views

Orthogonal projection onto (general) simplex

Published on 14 Apr 2026 - 9:07

628

Views

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

Published on 10 May 2026 - 13:51

60

Views

A problem regarding a convex closed set

Published on 12 Apr 2026 - 11:40

73

Views

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

Published on 25 Apr 2026 - 20:25

299

Views

Determining the polar of the following set:

Published on 15 Apr 2026 - 1:04

678

Views

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

Published on 10 May 2026 - 14:04

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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