Ayman Moussa's user avatar
Ayman Moussa's user avatar
Ayman Moussa's user avatar
Ayman Moussa
  • Member for 11 years, 5 months
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27 votes
4 answers
7k views

Proofs of Young's inequality for convolution

12 votes
2 answers
2k views

Reference on Minty's trick

11 votes
0 answers
536 views

Polynomial mapping primes to primes

8 votes
1 answer
1k views

Example of proof using the generic matrix

8 votes
3 answers
1k views

Counterexample of non-negative sequence weakly converging in $\mathscr{M}^1$ but not $L^1$

8 votes
2 answers
383 views

Best constant approximation in $L^p(\Omega)$

6 votes
2 answers
602 views

Banach algebra of smooth functions

6 votes
2 answers
1k views

Sufficient condition for $L^p$ multiplier on the torus

6 votes
2 answers
368 views

Norms on $\mathbb{R}^d$ whose linear isometries are the hypercube group

5 votes
1 answer
405 views

$L^2$ uniform integrability in terms of Fourier coefficients

5 votes
1 answer
319 views

Weak Hessian of the distance function

4 votes
1 answer
65 views

Distance to finite degree polynomials for BV functions

4 votes
0 answers
97 views

Systems of parabolic equations -- Petrovskii's condition

4 votes
1 answer
2k views

Norm of convolution operator

4 votes
2 answers
193 views

Periodic orbits in the plane

3 votes
0 answers
369 views

Extension divergence-free, curl-converging vector field

2 votes
2 answers
157 views

$\varepsilon$-covering number after diffeomorphism

2 votes
0 answers
106 views

Hilbert Transform and multiplier in $\mathbb{C}(X)$

2 votes
2 answers
615 views

Rate of convergence of mollifiers // Sobolev norms

2 votes
1 answer
271 views

Reference for the parabolic Cauchy problem on $\mathbb{R}^N$ or $\mathbb{T}^N$

2 votes
1 answer
327 views

Concavity/convexity of distance-to-boundary function

1 vote
0 answers
233 views

Maximal regularity heat equation

1 vote
0 answers
40 views

P1-finite element as convolution of P0-finite element

1 vote
0 answers
72 views

Hardy maximal function on the torus

1 vote
1 answer
248 views

Heat equation with source term in $L^1$

0 votes
0 answers
112 views

Reference for the Hardy maximal function on the torus