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Motivated by the problems of analytic hypoellipticity, we show that a special family of compact non self-adjoint operators has a non-zero eigenvalue. We recover old results by Christ,Hanges, Himonas, Pham-The-Lai and Robert proved by using…

Analysis of PDEs · Mathematics 2007-05-23 Sagun Chanillo , Bernard Helffer , Ari Laptev

In this article, we explore the boundedness properties of pseudo-differential operators on radial sections of line bundles over the Poincar\'e upper half plane, even when dealing with symbols of limited regularity. We first prove the…

Classical Analysis and ODEs · Mathematics 2023-10-18 Tapendu Rana , Michael Ruzhansky

Mathematical formulations and proofs for a wavelet based statistic employed in functional data analysis is elaborately discussed in this report. The propositions and derivations discussed here apply to a wavelet based statistic with hard…

Statistics Theory · Mathematics 2014-08-13 Senthil B. Girimurugan , Eric Chicken

We study pseudo-differential operators on a wedge with continuous and variable discrete branching asymptotics.

Differential Geometry · Mathematics 2015-03-13 B. -Wolfgang Schulze , Andrea Volpato

Partial-wave analyses (PWA) are an essential tool for studying resonance structures in decays with hadronic multi-body final states. For several years, more model-independent approaches to such analyses have been used for various decay…

High Energy Physics - Phenomenology · Physics 2021-09-07 Fabian Michael Krinner , Stephan Paul

Using the method of similar operators we study an even order differential operator with periodic, semiperiodic, and Dirichlet boundary conditions. We obtain asymptotic formulas for eigenvalues of this operator and estimates for its spectral…

Spectral Theory · Mathematics 2018-02-20 Dmitry M. Polyakov

The purpose of this paper is to establish the theory of stochastic pseudo-differential operators and give its applications in stochastic partial differential equations. First, we introduce some concepts on stochastic pseudo-differential…

Analysis of PDEs · Mathematics 2011-03-02 Xu Liu , Xu Zhang

We introduce a simplified (coarse) version of pseudo-differential calculus for operators of order zero on complete Riemannian manifolds. This calculus works for the usual Hormander (1,0) class of operators, as well as for…

Differential Geometry · Mathematics 2025-06-19 Gennadi Kasparov

We use radial estimates for pseudodifferential operators to describe long time evolution of solutions to $ i u_t - P u = f $ where $ P $ is a self-adjoint 0th order pseudodifferential operator satisfying hyperbolic dynamical assumptions and…

Analysis of PDEs · Mathematics 2019-07-31 Semyon Dyatlov , Maciej Zworski

The solution of a partial differential equation can be obtained by computing the inverse operator map between the input and the solution space. Towards this end, we introduce a \textit{multiwavelet-based neural operator learning scheme}…

Machine Learning · Computer Science 2021-10-12 Gaurav Gupta , Xiongye Xiao , Paul Bogdan

In this paper novel classes of 2-D vector-valued spatial domain wavelets are defined, and their properties given. The wavelets are 2-D generalizations of 1-D analytic wavelets, developed from the Generalized Cauchy-Riemann equations and…

Statistics Theory · Mathematics 2010-05-10 S. C. Olhede , G. Metikas

This article describes a class of pseudo-differential operators \begin{equation*} (\mathcal{A}^{\alpha}\varphi)(x)=\mathcal{F}^{-1}_{\xi \rightarrow…

Mathematical Physics · Physics 2020-09-15 Anselmo Torresblanca-Badillo

A new construction of a directional continuous wavelet analysis on the sphere is derived herein. We adopt the harmonic scaling idea for the spherical dilation operator recently proposed by Sanz et al. but extend the analysis to a more…

Astrophysics · Physics 2011-10-28 J. D. McEwen , M. P. Hobson , A. N. Lasenby

In this paper, we propose and explore a new connection in the study of $p$-adic $L$-functions and eigenvarieties. We use it to prove results on the geometry of the cuspidal eigenvariety for $\mathrm{GL}_{2n}$ over a totally real number…

Number Theory · Mathematics 2026-01-19 Daniel Barrera Salazar , Mladen Dimitrov , Chris Williams

Braided non-commutative differential geometry is studied. In particular we investigate the theory of (bicovariant) differential calculi in braided abelian categories. Previous results on crossed modules and Hopf bimodules in braided…

q-alg · Mathematics 2008-02-03 Yuri Bespalov , Bernhard Drabant

We present the application of the variational-wavelet analysis to the quasiclassical calculations of the solutions of Wigner/von Neumann/Moyal and related equations corresponding to the nonlinear (polynomial) dynamical problems. (Naive)…

Quantum Physics · Physics 2017-08-23 Antonina N. Fedorova , Michael G. Zeitlin

The purpose of this paper is to derive some applications of umbral calculus by using extended fermionic p-adic q-integral on Zp. From those applications, we derive some new interesting properties on the new family of Euler numbers and…

Number Theory · Mathematics 2013-09-23 Serkan Araci , Mehmet Acikgoz , Erdoğan Şen

Related to a semigroup of operators on a metric measure space, we define and study pseudodifferential operators (including the setting of Riemannian manifold, fractals, graphs ...). Boundedness on $L^p$ for pseudodifferential operators of…

Classical Analysis and ODEs · Mathematics 2012-12-12 Frederic Bernicot , Dorothee Frey

The paper proposes a construction of a quantum differentiation operator defined on the spaces of complex-valued functions of $p$-adic argument, and taking values in the algebra of bounded operators on a Hilbert space. The properties of this…

Mathematical Physics · Physics 2022-05-18 Evgeny I. Zelenov

We present a systematic analytic study of the $p$-Bessel functions $\mathcal{J}_{\omega,\varphi}^{[p]}$, a novel class of generalized Bessel functions arising from Fourier analysis on planar domains bounded by $p$-circles, including…

Number Theory · Mathematics 2026-05-05 Masaya Kitajima
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