timur's user avatar
timur's user avatar
timur's user avatar
timur
  • Member for 13 years, 6 months
  • Last seen more than a week ago
86 votes
Accepted

Does convergence in $L^p$ imply convergence almost everywhere?

41 votes
Accepted

Sobolev space $H^s(\mathbb{R}^n)$ is an algebra with $2s>n$

35 votes
Accepted

How is the acting of $H^{-1}$ on $H^1_0$ defined?

20 votes

Elliptic Regularity for solutions in distributional sense

19 votes

What is a good complex analysis textbook, barring Ahlfors's?

18 votes
Accepted

$C^\infty$ vs. $C^\omega$ surfaces

16 votes

Complex Analysis Book

15 votes

Positive harmonic function on $\mathbb{R}^n$ is a constant?

14 votes

A PDE exercise from Gilbarg Trudinger. problem 2.2

14 votes

Open problems in General Relativity

14 votes

In $\mathbb{R}^n$, locally lipschitz on compact set implies lipschitz

13 votes
Accepted

Do eigenfunctions of elliptic operator form basis of $H^k(M)$?

13 votes

The functional equation $f(x)+f(y)+f(z)+f(x+y+z)=f(x+y)+f(y+z)+f(z+x)$

12 votes

Why is $\Gamma\left(\frac{1}{2}\right)=\sqrt{\pi}$?

12 votes
Accepted

In regard to $L^p$ spaces, is $L^p \subset L^q$ for $p<q$?

11 votes
Accepted

Problem about Ricci flow

9 votes

Am I just not smart enough?

8 votes
Accepted

Non-ellipticity of Yang-Mills equations

8 votes

PDEs on manifold: what changes from Euclidean case?

8 votes
Accepted

Estimate solution of Poisson equation on unit ball

8 votes

How did Einstein integrate $\frac{\partial \tau}{\partial x'}+\frac{v}{c^2-v^2}\frac{\partial \tau}{\partial t}=0$?

7 votes
Accepted

Fourier Inversion formula on $L^2$

7 votes
Accepted

Compactly supported function.

7 votes

How to prove Weyl’s asymptotic law for the eigenvalues of the Dirichlet Laplacian?

7 votes
Accepted

Integral approximation of Fourier series.

7 votes
Accepted

Proof that you can approximate any continuous function using rectangles/step functions within a small error

6 votes
Accepted

power series for square root matrix

6 votes

On Dirichlet series and critical strips

6 votes
Accepted

An existence of global solution of differential equation of first order

6 votes

Book on matrix computation

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