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Top Questions
16
votes
Nonnegative smooth function as sum of squares of smooth functions
ca.analysis-and-odes
dg.differential-geometry
asked Aug 31 '12 at 20:28
mathoverflow.net
16
votes
Eigenvectors of the Fourier transformation
fourier-analysis
fourier-transform
schwartz-distributions
asked May 10 '16 at 12:47
mathoverflow.net
15
votes
Uncertainty principle
ca.analysis-and-odes
mp.mathematical-physics
harmonic-analysis
asked Oct 19 '16 at 13:21
mathoverflow.net
13
votes
Surjectivity of curl
ca.analysis-and-odes
ap.analysis-of-pdes
fluid-dynamics
asked Jan 17 '15 at 20:47
mathoverflow.net
13
votes
Derivative of the Gamma function
special-functions
gamma-function
asked Apr 22 '15 at 15:21
math.stackexchange.com
10
votes
Radon-Nikodym theorem for non-sigma finite measures
measure-theory
lebesgue-measure
hausdorff-measure
asked Jan 6 '17 at 14:17
mathoverflow.net
10
votes
Lipschitz-free spaces of $\mathbb R^n$
fa.functional-analysis
banach-spaces
preduals
asked Mar 19 '15 at 17:16
mathoverflow.net
9
votes
Inequality for Laguerre polynomials
inequalities
special-functions
orthogonal-polynomials
asked Mar 17 '14 at 20:18
mathoverflow.net
9
votes
Sharpening of Lindelöf hypothesis
nt.number-theory
riemann-zeta-function
asked Sep 6 '12 at 12:06
mathoverflow.net
9
votes
Largest known zero of the Riemann Zeta function
riemann-zeta-function
riemann-hypothesis
asked Mar 8 '17 at 10:24
mathoverflow.net
1
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Top Answers
38
Motivation for and history of pseudo-differential operators
mathoverflow.net
27
Does Physics need non-analytic smooth functions?
mathoverflow.net
11
Pullback measures
mathoverflow.net
11
Fourier Coefficients and Hölder Continuity
mathoverflow.net
9
Gagliardo-Nirenberg inequality
mathoverflow.net
8
What's the use of Malgrange preparation theorem?
mathoverflow.net
8
Is there any way to rewrite a partial differential equation using language of differential forms, tensors, etc?
mathoverflow.net
8
what's the motivation of Weyl calculus ?
mathoverflow.net
8
Is there an equivalent of Heisenberg's uncertainty principle in the decision sciences ?
mathoverflow.net
8
Why is multiplication on the space of smooth functions with compact support continuous?
mathoverflow.net
8
Were there attempts to express derivatives of Delta function as polynomials of Delta function?
mathoverflow.net
7
What is Quantization ?
mathoverflow.net
7
when a pseudo-differential operators to be compact?
mathoverflow.net
7
Integral representation of tempered distributions
mathoverflow.net
6
Generalization of the polarisation formula for symmetric bilinear forms to symmetric multilinear forms
mathoverflow.net
6
Hormander's bracket condition for the adjoint of an operator
mathoverflow.net
6
When is the adjoint of a hypoelliptic operator also hypoelliptic?
mathoverflow.net
6
About the definition of Borel and Radon measures
mathoverflow.net
5
Example for the Sobolev embedding theorem when p=n.
mathoverflow.net
5
fourier analytic proofs
mathoverflow.net
5
Heat Equation on $[0,T] \times \mathbb{R}^n$
mathoverflow.net
5
About the boundedness of a multiplication operator.
mathoverflow.net
5
Real function to entire functions
mathoverflow.net
5
Quasi-linear System of First Order P.D.E.s of “Mixed” type
mathoverflow.net
5
When is a Pseudo-differential operator trace class or in Dixmier ideal?
mathoverflow.net
5
Support-preserving pseudodifferential operators
mathoverflow.net
5
Smooth but non-analytic kernel functions
mathoverflow.net
5
Are Besov spaces $B^{s}_{p,q}$ invariant under Fourier transform?
mathoverflow.net
5
Is there a compactly supported function that its Fourier transfrom vanishes at given n real points?
mathoverflow.net
5
Extension of solutions of PDEs with constant coefficients
mathoverflow.net
1
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