Question

Why does this subgradient identity hold?

score 194 · Answer 1 · 2026-04-01 11:13:42

194

Views

Why does this subgradient identity hold?

Published on 01 Apr 2026 - 11:13

score 183 · Answer 2 · 2026-03-27 16:22:56

183

Views

Is this algebraic proof of the convexity of the exponential correct? Is there any purely algebraic proof?

Published on 27 Mar 2026 - 16:22

score 224 · Answer 3 · 2019-08-29 19:08:05

224

Views

The right derivative, $f'_{+}$, of a convex function $f$ is continuous $\iff$ $f$ is differentiable.

Published on 29 Aug 2019 - 19:08

score 36 · Answer 4 · 2026-03-25 14:23:37

36

Views

Efficient construction of the strict interior of a polytope.

Published on 25 Mar 2026 - 14:23

score 128 · Answer 5 · 2026-03-26 07:57:21

128

Views

Proofs related to Projection operator

Published on 26 Mar 2026 - 7:57

score 4.7k · Answer 6 · 2026-03-29 23:25:54

4.7k

Views

Example of when the minimum of two convex functions is not convex

Published on 29 Mar 2026 - 23:25

score 1.5k · Answer 7 · 2026-03-25 06:02:06

1.5k

Views

Derivative of the Prox / Proximal Operator

Published on 25 Mar 2026 - 6:02

score 877 · Answer 8 · 2026-04-01 11:21:19

877

Views

Determine if a set of points in a n dimensional set that are closer to point v1 than to point v2 form a half-space

Published on 01 Apr 2026 - 11:21

score 6k · Answer 9 · 2026-04-01 11:22:45

6k

Views

Show the level set of a convex function is convex but that the converse is not necessarily true

Published on 01 Apr 2026 - 11:22

score 96 · Answer 10 · 2026-04-01 11:22:48

96

Views

How to write the first order condition for a joint convex function $f(x,y)$, $x\in \mathbb{R}^{n}$ and $y\in \mathbb{R}^{n}$

Published on 01 Apr 2026 - 11:22

score 73 · Answer 11 · 2019-09-01 18:25:31

73

Views

Linear functionals with a special property

Published on 01 Sep 2019 - 18:25

score 158 · Answer 12 · 2019-09-03 09:30:17

158

Views

Fréchet differentiability of locally Lipschitz continuous convex functions

Published on 03 Sep 2019 - 9:30

score 449 · Answer 13 · 2019-09-03 10:34:48

449

Views

Piecewise linear approximations of Convex function

Published on 03 Sep 2019 - 10:34

score 81 · Answer 14 · 2026-03-25 14:25:48

81

Views

How to prove that $S=\{(x,y) \in \mathbb{R}^2 : x+y \leq 2 \}$ has no extreme points?

Published on 25 Mar 2026 - 14:25

score 150 · Answer 15 · 2026-03-25 12:53:18

150

Views

How can I start looking for extreme points in convex polytopes?

Published on 25 Mar 2026 - 12:53

List Question

Why does this subgradient identity hold?

Is this algebraic proof of the convexity of the exponential correct? Is there any purely algebraic proof?

The right derivative, $f'_{+}$, of a convex function $f$ is continuous $\iff$ $f$ is differentiable.

Efficient construction of the strict interior of a polytope.

Proofs related to Projection operator

Example of when the minimum of two convex functions is not convex

Derivative of the Prox / Proximal Operator

Determine if a set of points in a n dimensional set that are closer to point v1 than to point v2 form a half-space

Show the level set of a convex function is convex but that the converse is not necessarily true

How to write the first order condition for a joint convex function $f(x,y)$, $x\in \mathbb{R}^{n}$ and $y\in \mathbb{R}^{n}$

Linear functionals with a special property

Fréchet differentiability of locally Lipschitz continuous convex functions

Piecewise linear approximations of Convex function

How to prove that $S=\{(x,y) \in \mathbb{R}^2 : x+y \leq 2 \}$ has no extreme points?

How can I start looking for extreme points in convex polytopes?

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