Mathematics
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All Questions Answers
Score Newest
answer
114
What is the difference between projected gradient descent and ordinary gradient descent?
Nov 19, 2013
answer
19
A practical way to check if a matrix is positive-definite
Dec 1, 2011
answer
16
Conjugate function of log-sum-exp?
Jan 21, 2018
answer
14
Why is the $0$th power mean defined to be the geometric mean?
Oct 19, 2013
answer
12
$|f(x)|\leq \sqrt{\frac{\pi}{3}\int_0^\pi f'^2}$
Jun 21, 2014
answer
12
Proving convexity of a function whose Hessian is positive semidefinite over a convex set
Sep 26, 2014
answer
10
How to prove that a nilpotent matrix is not invertible?
Nov 21, 2015
answer
8
Sum of k-largest eigenvalues of a symmetric matrix as an SDP
Dec 1, 2014
answer
8
What is the motivation behind strong convexity
Dec 17, 2013
answer
7
Definite integral using the method of residues
Nov 3, 2011
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A nice necessary and sufficient condition on positive semi-definiteness of a matrix with a special structure

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