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  • Member for 10 years, 6 months
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23 votes

How can an extremely mathematically talented young person be helped to fulfill his/her potential?

17 votes

Does iterating the derivative infinitely many times give a smooth function whenever it converges?

11 votes

Which great mathematicians were also historians of mathematics?

9 votes

When to use more exciting function spaces than ordinary Sobolev spaces?

8 votes
Accepted

If a PDE has a unique classical solution, must it have a unique viscosity solution?

7 votes

Whitney extension theorem preserving monotonicity

6 votes
Accepted

Examples of functions in $W^{k,p}(\Omega)$ with exact smoothness

5 votes

Convergence of finite element method: counterexamples

5 votes

Positive kernel property

5 votes

List of problems for graduate topics?

5 votes
Accepted

Reference request for semilinear PDEs in dimension 2

4 votes
Accepted

Is a Bessel function larger than all other Bessel functions when evaluated at its first maximum?

4 votes

Convergence of a Trigonometric Series

4 votes

On a heat equation-like PDE

4 votes
Accepted

Points where harmonic functions fail to give a coordinates system

4 votes
Accepted

The compact embedding of $H^{1/2}_{2\pi}$ in $L^s(0, 2\pi)$

3 votes

What is standard continuity argument for well-posedness?

3 votes

Reference or proof of a lemma in PDE

3 votes
Accepted

Second-order elliptic regularity with rough coefficients

3 votes
Accepted

$L^{1}(\mathbb R) \cap L^{2}(\mathbb R) \cap C_{0}(\mathbb R)\subset H_{1}(\mathbb R)$?

3 votes

Existence of Green's function and the Dirichlet problem

3 votes

Why can't I get global existence to linear PDE in this way?

3 votes

eigenvalues of product of many symmetric positive definite matrices

3 votes

Dependence of solutions on parameters in partial differential equations

3 votes
Accepted

Norms in Sobolev space $W^{1,\infty}$

2 votes
Accepted

A Global Estimates for Linear Elliptic PDE

2 votes

On the convexity of certain integrals involving Bessel functions

2 votes
Accepted

Laplace equation on the disk with Robin boundary condition

2 votes

"Then obviously..." (a bound on strongly differential functions on an interval)

2 votes

Sum of product of Fourier series