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# Questions

1
1
vote
0
answers
120
views

### Is the solution of this linear system always positive definite?

jun 22 at 19:29 wmmiao 1775

2
votes
2
answers
280
views

### A sum of eigenvalues

may 30 at 12:54 Denis Serre 18.7k13193

1
vote
1
answer
163
views

### A question for solutions of perturbed linear systems

may 17 12 at 15:18 quid 13k3151

3
votes
3
answers
319
views

### How to bound the sup norm of a Rademacher process or equivalently a Gaussian process?

sep 6 at 8:43 Mark Lewko 3,981918

1
4
votes
5
answers
743
views

### An inequality on concave functions

jul 23 11 at 22:28 Kenneth Hung 35327

1
3
votes
0
answers
257
views

### A question about the generalized Lidskii-Wielandt inequality for matrices proved by Thompson and Freede

dec 28 10 at 20:25 Denis Serre 18.7k13193