List questions from pseudo-differential-operators

229

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$\displaystyle g(x):=\int_{\mathbb R^n} e^{2\pi ix\cdot \xi} e^{-\frac{|\xi|^2}{2}} \widehat{f}(\xi)\ d\xi$ is not compact supported?

Published on 15 Apr 2026 - 18:26

355

Views

Composition of Pseudodifferential Operators - Remainder term of Asymptotic Expansion

Published on 09 Apr 2026 - 14:12

73

Views

How to show this inequality involving derivatives of a smooth function?

Published on 09 Apr 2026 - 17:49

211

Views

Problem with double integral using Fourier transform?

Published on 10 Apr 2026 - 15:09

42

Views

Elliptic regularity of second order pseudos

Published on 13 Apr 2026 - 21:15

693

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Basic examples of functions in Hörmander class

Published on 15 Apr 2026 - 10:57

78

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Ellipticity of an operator in Gunther's proof of the isometric embedding

Published on 11 Apr 2026 - 17:34

288

Views

Inverse Fourier Transform involving inverse square root

Published on 16 Apr 2026 - 1:24

259

Views

Characteristic Variety of the Principal Symbol solves PDE system?

Published on 10 May 2026 - 14:06

947

Views

Gårding's inequality for $\mathbb R^n$ implies that for bounded smooth domains?

Published on 11 Nov 2015 - 10:17

25

Views

k-symbol differential opeartor L, and its independent of choices.

Published on 25 Nov 2015 - 3:55

123

Views

How far can we push the Schwartz kernel theorem?

Published on 06 May 2026 - 12:17

333

Views

Show that a regularizing operator $K : C_c(\Omega) \to \mathcal{D}'(\Omega)$ has kernel $k \in C^\infty(\Omega \times \Omega)$.

Published on 17 Apr 2026 - 19:55

302

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Wells 'Differential Analysis on Complex Manifolds' page 127

Published on 13 Apr 2026 - 23:53

1.4k

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Composition of pseudo-differential operators

Published on 10 May 2026 - 14:04

List Question

$\displaystyle g(x):=\int_{\mathbb R^n} e^{2\pi ix\cdot \xi} e^{-\frac{|\xi|^2}{2}} \widehat{f}(\xi)\ d\xi$ is not compact supported?

Composition of Pseudodifferential Operators - Remainder term of Asymptotic Expansion

How to show this inequality involving derivatives of a smooth function?

Problem with double integral using Fourier transform?

Elliptic regularity of second order pseudos

Basic examples of functions in Hörmander class

Ellipticity of an operator in Gunther's proof of the isometric embedding

Inverse Fourier Transform involving inverse square root

Characteristic Variety of the Principal Symbol solves PDE system?

Gårding's inequality for $\mathbb R^n$ implies that for bounded smooth domains?

k-symbol differential opeartor L, and its independent of choices.

How far can we push the Schwartz kernel theorem?

Show that a regularizing operator $K : C_c(\Omega) \to \mathcal{D}'(\Omega)$ has kernel $k \in C^\infty(\Omega \times \Omega)$.

Wells 'Differential Analysis on Complex Manifolds' page 127

Composition of pseudo-differential operators

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