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user90189
  • Member for 9 years, 11 months
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6 votes
Accepted

Sup norm of Fourier transform of $ \frac{\sin |x|}{|x|^\lambda} \mathbb 1_{\{2^k\le |x| <2^{k+1}\}}, \ 0<\lambda<n $

5 votes
Accepted

Why is boundedness of the ball multiplier equivalent to the convergence of Fourier transform in Lp?

3 votes
Accepted

Limit of a state-transition matrix

3 votes
Accepted

Fourier transform of $\frac {x} {(x^2+y^2)}$

3 votes
Accepted

interpolation of Fourier decoupling

3 votes
Accepted

How to get the convergence by interpolation

2 votes
Accepted

Integral foliation identity

2 votes

Bound on trigonometric polynomials in terms of derivative

2 votes

How to prove a version of Poincare inequality?

2 votes
Accepted

Find a function that makes this differential form exact

2 votes

Notation (manifolds, harmonic analysis)

2 votes

Harish-Chandra's submersive principle on closed subsets

1 vote

Decay of the Fourier transform of the surface measure of the sphere via uncertainty

1 vote

Parition of unity argument in a Fourier analysis paper

1 vote

An inequality of J. Necas

1 vote

An inequality with Sobolev norm.

1 vote
Accepted

Identity between resolvent and singular value density

1 vote

Modified Energy Method for Transformed Fokker-Planck Equation (Tricky Integration by parts...)

1 vote
Accepted

What is the closure of $C_c^{\infty}(\mathbb{R}^3\setminus\left\lbrace 0\right\rbrace)$ with respect to the norm of $H^{1}(\mathbb{R}^3)$?

1 vote
Accepted

searching help for understanding the proof to Kolmogorov's Theorem

1 vote
Accepted

Is a parametrization $\mathbb{C}^3 \ni (\rho, u, \eta) \mapsto (\rho \sin(u+\eta), \rho \sin u, \rho \sin \eta) \in \mathbb{C}^3 $ surjective?

1 vote
Accepted

Integrate over $g(\vec{v} \cdot \vec{x}) \ h(|x|)$ using solid angle and polar coordinates

1 vote
Accepted

A function of bounded variation in a regular set has bounded variation in $\mathbb R^N$ and a formula for its variation

0 votes

Prove the inequalites of complex vectors

0 votes

Show that $R^n/Im(\rho)=R^{n-1}\bigoplus R/2R$, where $R$ is an abelian group and $\rho$ is the following function.

0 votes

If $X$ is a compact set, when does $f'(0)$ exist?

0 votes

There exists function sequence $\{f_{n}\}$ converges to $0$ such that $\{a_{n}f_{n}\}$ not converges to $0$

0 votes
Accepted

Estimating the $H^{-1}$ norm of a special cut-off function

0 votes

Proving that $\exists a,b \in \mathbb{C}$ such that $\forall z\in \mathbb{C}$ either $m(z)=az+b$ or $m(z)=a\bar{z}+b$ .

0 votes

Behavior of fundamental solution to heat equation after projection