List questions from convex-analysis

Published on 25 Mar 2026 - 17:39

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Convexity of Frobenius norm of matrix exponential

Published on 25 Mar 2026 - 16:03

521

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Does there exist a convex function which is not strictly differentiable almost everywhere?

Published on 14 Mar 2018 - 8:12

37

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Is there some generalization of convex sets along these lines?

Published on 14 Mar 2018 - 16:28

24

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Related to the convexity of the following function?

Published on 15 Mar 2018 - 4:11

194

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How to determine whether this set is convex?

Published on 15 Mar 2018 - 22:38

62

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Optimization problem on infinite dimensional space

Published on 25 Mar 2026 - 14:19

868

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A $C^2$-function as difference of two convex functions

Published on 16 Mar 2018 - 7:58

45

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Weak maximization condition

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1.4k

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First order characterization of strict convexity

Published on 25 Mar 2026 - 16:00

344

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If $f$ is convex, is $\sup_x f(x,y)$ convex?

Published on 17 Mar 2018 - 4:06

1.2k

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Prove $\nabla^2 f(x) \preceq L I$ for convex $f$ with Lipschitz gradient

Published on 17 Mar 2018 - 23:38

72

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Proving $f(x,y) = |xy| + a(x^2 + y^2)$ is convex if and only if $a \ge 1/2$

Published on 18 Mar 2018 - 11:50

126

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How to show that if $f$ is a convex function, then the limit $\underset{t \rightarrow 0^+}{lim}\frac{f(x+ty)-f(x)}{t}$ exists?

Published on 22 Mar 2026 - 15:34

68

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Closure of Triangle - Convex Set

Published on 18 Mar 2018 - 17:49

List Question

Computation of Bouligand tangent cone.

Convexity of Frobenius norm of matrix exponential

Does there exist a convex function which is not strictly differentiable almost everywhere?

Is there some generalization of convex sets along these lines?

Related to the convexity of the following function?

How to determine whether this set is convex?

Optimization problem on infinite dimensional space

A $C^2$-function as difference of two convex functions

Weak maximization condition

First order characterization of strict convexity

If $f$ is convex, is $\sup_x f(x,y)$ convex?

Prove $\nabla^2 f(x) \preceq L I$ for convex $f$ with Lipschitz gradient

Proving $f(x,y) = |xy| + a(x^2 + y^2)$ is convex if and only if $a \ge 1/2$

How to show that if $f$ is a convex function, then the limit $\underset{t \rightarrow 0^+}{lim}\frac{f(x+ty)-f(x)}{t}$ exists?

Closure of Triangle - Convex Set

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