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This paper is the first part of a two-paper series whose aim is to give a thorough account on Connes' pseudodifferential calculus on noncommutative tori. This pseudodifferential calculus has been used in numerous recent papers, but a…

Operator Algebras · Mathematics 2019-04-09 Hyunsu Ha , Gihyun Lee , Raphael Ponge

The methods of spectral geometry are useful for investigating the metric aspects of noncommutative geometry and in these contexts require extensive use of pseudo-differential operators. In a foundational paper, Connes showed that, by direct…

Operator Algebras · Mathematics 2018-03-14 Jim Tao

In this paper, we introduce a parametric pseudodifferential calculus on noncommutative $n$-tori which is a natural nest for resolvents of elliptic pseudodifferential operators. Unlike in some previous approaches to parametric…

Operator Algebras · Mathematics 2019-11-14 Gihyun Lee , Raphael Ponge

We introduce an abstract theory of the principal symbol mapping for pseudodifferential operators extending the results of a preceding paper and providing a simple algebraic approach to the theory of pseudodifferential operators in settings…

Operator Algebras · Mathematics 2018-06-20 Fedor Sukochev , Edward McDonald , Dmitriy Zanin

This article presents a survey of recent developments on pseudodifferential operators on noncommutative tori. We describe currently available constructions of those operators: by means of a $C^*$--dynamical system, by using an analogue of…

Operator Algebras · Mathematics 2024-07-19 Carolina Neira Jiménez

The aim of this paper is to show that various known characterizations of traces on classical pseudodifferentials operators (PsiDOs) can actually be obtained by very elementary considerations on PsiDOs, using only basic properties of these…

Analysis of PDEs · Mathematics 2010-09-17 Raphael Ponge

We extend the noncommutative residue of M. Wodzicki on compactly supported classical pseudo-differential operators of order $-d$ and generalise A. Connes' trace theorem, which states that the residue can be calculated using a singular trace…

Functional Analysis · Mathematics 2012-12-21 Nigel Kalton , Steven Lord , Denis Potapov , Fedor Sukochev

As the second part of the sequel, we investigate the variation of rearrangement operators (more precisely, the spectral functions behind) arising in the study of modular geometry on noncommutative (two) tori. We initiate a systematic…

Mathematical Physics · Physics 2021-09-17 Yang Liu

Pseudo-differential and Fourier series operators on the n-torus are analyzed by using global representations by Fourier series instead of local representations in coordinate charts. Toroidal symbols are investigated and the correspondence…

Functional Analysis · Mathematics 2012-08-10 Michael Ruzhansky , Ville Turunen

In this paper we establish uniqueness theorems for the noncommutative residue and the canonical trace on pseudodifferential operators on noncommutative tori of arbitrary dimension. The former is the unique trace up to constant multiple on…

Operator Algebras · Mathematics 2020-07-07 Raphaël Ponge

In this paper we will outline elements of the global calculus of seudo-differential operators on the group SU(2). This is a part of a more general approach to pseudo-differential operators on compact Lie groups that will appear in the…

Functional Analysis · Mathematics 2009-12-30 Michael Ruzhansky , Ville Turunen

In this paper we prove a version of Connes' trace theorem for noncommutative tori of any dimension~$n\geq 2$. This allows us to recover and improve earlier versions of this result in dimension $n=2$ and $n=4$ by Fathizadeh-Khalkhali. We…

Operator Algebras · Mathematics 2020-05-20 Raphael Ponge

We prove an extended version of Cordes' lemma concerning trace-class properties of some special pseudo-differential operators. This version of Cordes' lemma is used to improve the results in \cite{Arsu} concerning the Schatten-class…

Functional Analysis · Mathematics 2007-05-23 Gruia Arsu

We define a noncommutative residue for classical Euclidean pseudodifferential operators on a torus of arbitrary dimension. We prove that, up to multiplication by a constant, it is the unique trace on the algebra of classical…

Analysis of PDEs · Mathematics 2011-12-30 Farzad Fathizadeh

In this paper we develop the calculus of pseudo-differential operators on the lattice $\mathbb{Z}^n$, which we can call pseudo-difference operators. An interesting feature of this calculus is that the phase space is compact so the symbol…

Functional Analysis · Mathematics 2019-12-24 Linda N. A. Botchway , P. Gaël Kibiti , Michael Ruzhansky

A general question behind this paper is to explore a good notion for intrinsic curvature in the framework of noncommutative geometry started by Alain Connes in the 80s. It has only recently begun (2014) to be comprehended via the intensive…

Operator Algebras · Mathematics 2016-06-28 Yang Liu

In this monograph we develop magnetic pseudodifferential theory for operator-valued and equivariant operator-valued functions and distributions from first principles. These have found plentiful applications in mathematical physics,…

Mathematical Physics · Physics 2022-10-13 Giuseppe De Nittis , Max Lein , Marcello Seri

Let $G$ be a compact Lie group of dimension $n.$ In this work we characterise the membership of classical pseudo-differential operators on $G$ in the trace class ideal $S_{1}(L^2(G)),$ as well as in the setting of the Schatten ideals…

Functional Analysis · Mathematics 2023-01-11 Duván Cardona , Marianna Chatzakou , Michael Ruzhansky , Joachim Toft

This paper finishes the goal of the authors started in two previous manuscripts dedicated to revisiting the continuity properties of toroidal pseudo-differential operators with symbols in the H\"ormander classes. Here we prove pointwise…

Analysis of PDEs · Mathematics 2025-09-18 Duván Cardona , Manuel Alejandro Martínez

Let $T^n$ denote the n-dimensional torus. The class of the bounded operators on $L^2(T^n)$ with analytic orbit under the action of $T^n$ by conjugation with the translation operators is shown to coincide with the class of the zero-order…

Functional Analysis · Mathematics 2016-10-21 Rodrigo A. H. M. Cabral , Severino T. Melo
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