Question

Prove that $\frac{1}{(1+e^x)}$ is strictly convex over $[0,\infty]$

score 768 · Answer 1 · 2026-03-26 14:30:24

768

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Prove that $\frac{1}{(1+e^x)}$ is strictly convex over $[0,\infty]$

Published on 26 Mar 2026 - 14:30

score 3.8k · Answer 2 · 2026-03-26 20:44:09

3.8k

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Convex Optimization - Minimizing the Frobenius Norm of a Matrix with Linear Inequality Constraint of its Vectorization

Published on 26 Mar 2026 - 20:44

score 86 · Answer 3 · 2026-04-10 08:58:11

86

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How to linearise the constraint with a product term?

Published on 10 Apr 2026 - 8:58

score 128 · Answer 4 · 2026-04-10 01:38:36

128

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Minimizing complex exponentials

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score 76 · Answer 5 · 2026-04-11 06:56:00

76

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How does one derive the minimal enclosing ellipsoid for another half-ellipsoid?

Published on 11 Apr 2026 - 6:56

score 26 · Answer 6 · 2026-04-10 05:58:39

26

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Does a function has to have zero partial derivatives at its maximal/minimal point on compact domain?

Published on 10 Apr 2026 - 5:58

score 34 · Answer 7 · 2026-03-29 07:22:10

34

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Show uniqueness of solution with random variables

Published on 29 Mar 2026 - 7:22

score 290 · Answer 8 · 2026-03-25 06:03:24

290

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Reduce amount of trucks in a multi-product transportation problem

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score 140 · Answer 9 · 2026-04-11 00:45:08

140

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score 438 · Answer 10 · 2026-04-10 04:22:46

438

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Published on 10 Apr 2026 - 4:22

score 225 · Answer 11 · 2026-04-11 15:34:17

225

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Is the convex hull of closed cones closed?

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score 1.5k · Answer 12 · 2026-04-11 08:14:17

1.5k

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How to linearize if, then constraint.

Published on 11 Apr 2026 - 8:14

score 76 · Answer 13 · 2026-04-09 06:12:21

76

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Published on 09 Apr 2026 - 6:12

score 1.2k · Answer 14 · 2026-04-11 03:24:14

1.2k

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Published on 11 Apr 2026 - 3:24

score 113 · Answer 15 · 2026-03-26 17:32:38

113

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Solve $ \arg \min_{V} {\left\| {V}^{T} V - T \right\|}_{2} $ over $ V \in \mathbb{R}^{n \times m} $

Published on 26 Mar 2026 - 17:32

List Question

Prove that $\frac{1}{(1+e^x)}$ is strictly convex over $[0,\infty]$

Convex Optimization - Minimizing the Frobenius Norm of a Matrix with Linear Inequality Constraint of its Vectorization

How to linearise the constraint with a product term?

Minimizing complex exponentials

How does one derive the minimal enclosing ellipsoid for another half-ellipsoid?

Does a function has to have zero partial derivatives at its maximal/minimal point on compact domain?

Show uniqueness of solution with random variables

Reduce amount of trucks in a multi-product transportation problem

Minimize a multivariable cost function from measurement data?

Determining active constraints

Is the convex hull of closed cones closed?

How to linearize if, then constraint.

Which solver method for solving indicator function in a QP problem

Minimizing a symmetric sum of fractions without calculus

Solve $ \arg \min_{V} {\left\| {V}^{T} V - T \right\|}_{2} $ over $ V \in \mathbb{R}^{n \times m} $

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