List questions from convex-analysis

Published on 21 Mar 2014 - 2:33

40

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Does one of these conditions for norms follow from the other?

Published on 04 Apr 2026 - 7:54

662

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Is there any version of Jensen's inequality for quasiconvex function

Published on 21 Mar 2014 - 20:50

63

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Is $f(H)=H^TH$ convex? $H$ is a $m\times n$ matrix

Published on 22 Mar 2014 - 21:20

1.6k

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About the hyperplane conjecture.

Published on 26 Mar 2026 - 7:55

918

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Show homeomorphism between convex hull and unit ball?

Published on 30 Mar 2026 - 5:16

4.8k

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Convex function almost surely differentiable.

Published on 26 Mar 2014 - 16:00

380

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Subdifferential boundary conditions: Testing with $L^2$ or $H^{1/2}$ functions

Published on 28 Mar 2026 - 22:08

82

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A statement for convex sets

Published on 01 Apr 2026 - 18:45

445

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A bounded subset in $\mathbb R^2$ which is "nowhere convex"?

Published on 27 Mar 2014 - 7:54

419

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Convex function that has a finite limit at infinity

Published on 30 Mar 2026 - 4:37

2.4k

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Example of sum of log-concave is not always log-concave

Published on 29 Mar 2014 - 23:28

331

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The key step to prove log-convexity is preserved under sums

Published on 30 Mar 2014 - 0:08

81

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A Q about S.Boyd's CVX book p. 107

Published on 30 Mar 2014 - 5:19

258

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Partial Ordering of proper cone K

Published on 30 Mar 2014 - 7:37

List Question

Is this function strictly convex?

Does one of these conditions for norms follow from the other?

Is there any version of Jensen's inequality for quasiconvex function

Is $f(H)=H^TH$ convex? $H$ is a $m\times n$ matrix

About the hyperplane conjecture.

Show homeomorphism between convex hull and unit ball?

Convex function almost surely differentiable.

Subdifferential boundary conditions: Testing with $L^2$ or $H^{1/2}$ functions

A statement for convex sets

A bounded subset in $\mathbb R^2$ which is "nowhere convex"?

Convex function that has a finite limit at infinity

Example of sum of log-concave is not always log-concave

The key step to prove log-convexity is preserved under sums

A Q about S.Boyd's CVX book p. 107

Partial Ordering of proper cone K

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