Denis Serre's user avatar
Denis Serre's user avatar
Denis Serre's user avatar
Denis Serre
  • Member for 13 years, 7 months
  • Last seen this week
2 votes
1 answer
294 views

$\omega$-Commuting matrices vs Stone-von Neumann Theorem

6 votes
1 answer
156 views

A second-order recursion (functional equation)

3 votes
1 answer
222 views

Cofactor matrices and positive semi-definiteness

5 votes
2 answers
415 views

Extending a convex function to a higher dimensional domain

16 votes
1 answer
713 views

The determinant as a differential operator

1 vote
1 answer
135 views

Cofactor an geometrical mean in $\mathit{SPD}_3$: a Gårding-like inequality

12 votes
3 answers
801 views

Signed factors of harmonic polynomials

1 vote
0 answers
69 views

When can we separate two pairs in ${\mathbb H}_n$, although it is not a lattice?

9 votes
2 answers
316 views

Almgren's regularity Theorem ; a simple example?

8 votes
2 answers
506 views

Orthogonal basis of ${\bf Sym}_n(\mathbb R)$, made of orthogonal matrices

16 votes
1 answer
1k views

Integral inequality: an elementary proof?

163 votes
9 answers
28k views

Endless controversy about the correctness of significant papers

1 vote
1 answer
152 views

Closed form of a Fourier transform

2 votes
0 answers
75 views

Differential inequality with convex constraint

29 votes
6 answers
7k views

Integers in a triangle, and differences

4 votes
0 answers
168 views

Spectrum of large Hilbert matrices

5 votes
0 answers
72 views

Dimension reduction and isoperimetric inequality

10 votes
5 answers
644 views

Is there a $3$-commutative algebra?

28 votes
9 answers
7k views

Is a come back to mathematical research possible?

1 vote
0 answers
53 views

The "hyperbolicity preserving" probabilities

11 votes
2 answers
672 views

Character theory and Quantum Chemistry

13 votes
4 answers
3k views

Mathematical model for Hanoi Towers

6 votes
1 answer
350 views

Convex solutions of the Poisson equation

15 votes
2 answers
1k views

Vanishing of a sum of roots of unity

8 votes
4 answers
877 views

$\ell^p$ version of singular values

2 votes
1 answer
76 views

Interpolation of normed spaces *vs* geometrical mean of positive matrices

3 votes
2 answers
176 views

Variational principle for relativistic gas dynamics

5 votes
1 answer
244 views

Convergence of a series related to $\mathrm{SL}_2({\mathbb N})$

26 votes
3 answers
1k views

The specificity of dimension $1+3$ for the real world

4 votes
1 answer
400 views

Wasserstein distance to the set of Gaussians ; Boltzman dissipation rate

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