3

Questions
votes newest views recent
5
14
votes
5
answers
737
views

How far is a set of vectors from being orthogonal?

jun 10 at 2:57 Louis Deaett 341●7

 
10
votes
2
answers
683
views

The cone of positive semidefinite matrices is self-dual? (reference needed)

may 29 11 at 6:38 Denis Serre 18.7k●1●31●93

1
7
votes
1
answer
284
views

A polynomial map from ℝ^n to ℝ^n mapping the positive orthant onto ℝ^n?

jan 15 10 at 19:57 Mariano Suárez-Alvarez 30.6k●8●69●155