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Ludwig's user avatar
Ludwig's user avatar
Ludwig
  • Member for 8 years, 10 months
  • Last seen more than a month ago
  • Berlin, Germany
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About

I'm interested in both pure and applied math.

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All Questions Answers
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question
29
Unconventional examples of mathematical modelling
Aug 15, 2019
question
18
A seemingly simple inequality
Jan 15, 2017
question
16
The number of 0-1 normal matrices
May 4, 2019
question
13
A log inequality for positive definite trace-one matrices
Mar 13, 2016
question
11
A (linear) optimization problem subject to (linear) matrix inequality constraints
Sep 28, 2018
question
9
Maximizing a ratio of determinants
May 19, 2017
question
9
A trace-constrained maximization problem in the cone of positive definite matrices
Sep 4, 2018
question
8
A limiting sequence of positive definite matrices
Dec 23, 2018
question
8
A generalized log inequality for positive definite trace-one matrices
Jan 28, 2017
question
7
Trace of a nonlinear matrix equation (cont'd)
Sep 13, 2016
Top network posts
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24
Literary works authored by mathematicians
15
$\sum\limits_i a_i^2\sum\limits_i b_i^2+\left(\sum\limits_ia_i b_i\right)^2\geq \sqrt{\sum\limits_i a_i^4\sum\limits_i b_i^4}+\sum\limits_ia_i^2b_i^2$
15
Behavior of $I(n) = \int_{-\pi}^{\pi}\int_{-\pi}^{\pi}e^{ i n (x+y)}\,\frac{2\sin^2(x)\sin^2(y)}{2k -\cos(x)-\cos( y)}\,\mathrm{d}x\,\mathrm{d}y$
14
Why wasn't probability developed in ancient Greece?
14
Published paper containing well-known results

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