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We establish continuity and Schatten-von Neumann properties for matrix operators with matrices satisfying mixed quasi-norm estimates. These considerations also include the case when the Lebesgue and Schatten parameters are allowed to stay…

Functional Analysis · Mathematics 2016-05-02 Joachim Toft

We consider modulation space and spaces of Schatten-von Neumann symbols where corresponding pseudo-differential operators map one Hilbert space to another. We prove H\"older-Young and Young type results for such spaces under dilated…

Analysis of PDEs · Mathematics 2009-02-17 Joachim Toft

We apply Shubin's theory of global symbol classes $\Gamma_{\rho}^{m}$ to the Born-Jordan pseudodifferential calculus we have previously developed. This approach has many conceptual advantages, and makes the relationship between the…

Functional Analysis · Mathematics 2016-03-16 Elena Cordero , Maurice de Gosson , Fabio Nicola

We consider Fourier integral operators with symbols in modulation spaces and non-smooth phase functions whose second orders of derivatives belong to certain types of modulation space. We establish continuity and Schatten-von Neumann…

Analysis of PDEs · Mathematics 2008-02-19 Joachim Toft , Francesco Concetti , Gianluca Garello

We develop our earlier approach to the Weyl calculus for representations of infinite-dimensional Lie groups by establishing continuity properties of the Moyal product for symbols belonging to various modulation spaces. For instance, we…

Functional Analysis · Mathematics 2011-02-08 Ingrid Beltita , Daniel Beltita

We introduce multilinear localization operators in terms of the short-time Fourier transform, and multilinear Weyl pseudodifferential operators. We prove that such localization operators are in fact Weyl pseudodifferential operators whose…

Functional Analysis · Mathematics 2018-03-28 Nenad Teofanov

We consider Fourier integral operators with symbols in modulation spaces and non-smooth phase functions whose second orders of derivatives belong to certain types of modulation space. We establish continuity and Schatten-von Neumann…

Analysis of PDEs · Mathematics 2014-06-17 Francesco Concetti , Gianluca Garello , Joachim Toft

In this work we obtain continuity results on H\"older spaces for operators belonging to a Weyl-H\"ormander calculus for metrics such that the class of the associated operators contains, in particular, certain hypoelliptic laplacians. With…

Analysis of PDEs · Mathematics 2019-04-04 Duván Cardona

We consider bilinear pseudo-differential operators whose symbols posses Gevrey type regularity and may have a sub-exponential growth at infinity, together with all their derivatives. It is proved that those symbol classes can be described…

Functional Analysis · Mathematics 2019-06-27 Ahmed Abdeljawad , Sandro Coriasco , Nenad Teofanov

We investigate continuity properties of operators obtained as values of the Weyl correspondence constructed by N.V. Pedersen (Invent. Math. 118 (1994), 1--36) for arbitrary irreducible representations of nilpotent Lie groups. To this end we…

Analysis of PDEs · Mathematics 2009-09-27 Ingrid Beltita , Daniel Beltita

We investigate continuity properties of the operators obtained by the magnetic Weyl calculus on nilpotent Lie groups, using modulation spaces associated with unitary representations of certain infinite-dimensional Lie groups.

Analysis of PDEs · Mathematics 2010-07-08 Ingrid Beltita , Daniel Beltita

This paper provides sufficient conditions for the boundedness of Weyl operators on modulation spaces. The Weyl symbols belong to Wiener amalgam spaces, or generalized modulation spaces, as recently renamed by their inventor Hans…

Functional Analysis · Mathematics 2018-10-16 Lorenza D'Elia , Salvatore Ivan Trapasso

As a consequence of the Schwartz kernel Theorem, any linear continuous operator $\widehat{A}:$ $\mathcal{S}(\mathbb{R}^{n})\longrightarrow\mathcal{S}^{\prime}(\mathbb{R}^{n})$ can be written in Weyl form in a unique way, namely it is the…

Functional Analysis · Mathematics 2016-06-28 Elena Cordero , Maurice de Gosson , Fabio Nicola

We deduce continuity properties for pseudo-differential operators with symbols in quasi-Banach Orlicz modulation spaces when rely on other quasi-Banach Orlicz modulation spaces. In particular we extend certain results in…

Functional Analysis · Mathematics 2022-04-14 Joachim Toft , Rüya Üster

We describe boundedness and compactness properties for the operators obtained by the Weyl-Pedersen calculus in the case of the irreducible unitary representations of nilpotent Lie groups that are associated with flat coadjoint orbits. We…

Analysis of PDEs · Mathematics 2013-10-22 Ingrid Beltita , Daniel Beltita

We study structural properties of Wiener-Lebesgue spaces with respect to a slowly varying metrics and certain Lebesgue parameters. For $p\in (0,1]$, we deduce Schatten-$p$ properties for pseudo-differential operators whose symbols, together…

Functional Analysis · Mathematics 2024-05-09 Matteo Bonino , Sandro Coriasco , Albin Petersson , Joachim Toft

There has recently been evidence for replacing the usual Weyl quantization procedure by the older and much less known Born-Jordan rule. In this paper we discuss this quantization procedure in detail and relate it to recent results of…

Mathematical Physics · Physics 2011-02-28 Maurice de Gosson , Franz Luef

The usual Weyl calculus is intimately associated with the choice of the standard symplectic structure on $\mathbb{R}^{n}\oplus\mathbb{R}^{n}$. In this paper we will show that the replacement of this structure by an arbitrary symplectic…

Functional Analysis · Mathematics 2012-09-11 Nuno Costa Dias , Maurice de Gosson , Franz Luef , João Nuno Prata

We characterise the Weyl-H\"ormander symbol classes $S(M,g)$ via the growth of the action of the corresponding $\Psi$DOs on time-frequency shifts of a single test function. For this purpose, we introduce a geometric short-time Fourier…

Analysis of PDEs · Mathematics 2022-10-05 Stevan Pilipović , Bojan Prangoski

We combine our previous results on magnetic pseudo-differential operators for H\"ormander symbols dominated by tempered weights [arXiv:2511.07184] with the magnetic Weyl super calculus of Lee and Lein [arXiv:2201.11487, arXiv:2405.19964].…

Mathematical Physics · Physics 2026-03-30 Horia D. Cornean , Mikkel H. Thorn
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