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We provide complete structural theorems for the so-called quasiasymptotic behavior of non-quasianalytic ultradistributions. As an application of these results, we obtain descriptions of quasiasymptotic properties of regularizations at the…

Functional Analysis · Mathematics 2019-11-22 Lenny Neyt , Jasson Vindas

We consider the linear relaxation Boltzmann equation in a semiclassical framework. We construct a family of sharp quasimodes for the associated operator which yields sharp spectral asymptotics for its small spectrum in the low temperature…

Analysis of PDEs · Mathematics 2023-10-09 Thomas Normand

We introduce a notion of variable quasi-Bregman monotone sequence which unifies the notion of variable metric quasi-Fej\'er monotone sequences and that of Bregman monotone sequences. The results are applied to analyze the asymptotic…

Optimization and Control · Mathematics 2015-05-19 Quang Van Nguyen

We introduce a suitable notion of asymptotic smoothness on infinite dimensional Banach spaces, and we prove that, under some structural restrictions on the space, the convex envelope of an asymptotically smooth function is asymptotically…

Functional Analysis · Mathematics 2016-04-21 Jesús A. Jaramillo , Raquel Gonzalo , Diego Yáñez

Let $E_1,\;E_2$ be symmetric quasi Banach function spaces on $(0,\alpha)\;(0<\alpha\le\8)$. We study some properties of several constructions (the products $E_1(\M)\odot E_2(\M)$, the Calder$\rm\acute{o}$n spaces $E_1(\M)^\theta…

Operator Algebras · Mathematics 2021-07-13 Turdebek N. Bekjan , Myrzagali N. Ospanov

In this paper we define a notion of partial APNness and find various characterizations and constructions of classes of functions satisfying this condition. We connect this notion to the known conjecture that APN functions modified at a…

Information Theory · Computer Science 2019-05-31 Lilya Budaghyan , Nikolay S. Kaleyski , Soonhak Kwon , Constanza Riera , Pantelimon Stanica

In the present work we give some sufficient conditions to obtain a unique almost automorphic solution to abstract nonlinear integral equations which are simultaneously of advanced and delayed type and also a unique asymptotically almost…

Functional Analysis · Mathematics 2020-01-28 Alan Chávez , Manuel Pinto , Ulices Zavaleta

We study absolute-continuity properties of a class of stochastic processes, including the gamma and the Dirichlet processes. We prove that the laws of a general class of non-linear transformations of such processes are locally equivalent to…

Probability · Mathematics 2007-06-21 Max-K. Von Renesse , Marc Yor , Lorenzo Zambotti

We study a class of quasi-variational inequality problems defined over infinite dimensional Banach space and deduce sufficient conditions for ensuring solutions to such problems under the upper semi-continuity and pseudomonotonicity…

Optimization and Control · Mathematics 2023-01-18 Asrifa Sultana , Shivani Valecha

The article is devoted to holomorphic and meromorphic functions of quaternion and octonion variables. New classes of quasi-conformal and quasi-meromorphic mappings are defined and investigated. Properties of such functions such as their…

Complex Variables · Mathematics 2018-12-18 S. V. Ludkovsky

We introduce invariants, called shifting numbers, that measure the asymptotic amount by which an autoequivalence of a triangulated category translates inside the category. The invariants are analogous to Poincare translation numbers that…

Algebraic Geometry · Mathematics 2020-09-03 Yu-Wei Fan , Simion Filip

We discuss some different results on Sidon-type inequalities and on the space of quasi-continuous functions.

Classical Analysis and ODEs · Mathematics 2023-09-26 Artyom Radomskii

In this paper, we analyze metrical approximations of functions $F :\Lambda times X \rightarrow Y$ by trigonometric polynomials and $\rho$-periodic type functions, where $\emptyset \neq \Lambda \subseteq {\mathbb R}^{n},$ $X$ and $Y $are…

Functional Analysis · Mathematics 2022-05-19 B. Chaouchi , M. Kostic , D. Velinov

This paper provides a functional analytic approach to differential equations on Banach space with slowly evolving parameters. We develop a Fenichel-like theory for attracting subsets of critical manifolds via a Lyapunov-Perron method. This…

Dynamical Systems · Mathematics 2025-10-06 Dirk Doorakkers , Daniele Avitabile , Jan Bouwe van den Berg

The present paper is concerned with strong stability of solutions of non-autonomous equations of the form $\dot u(t)=A(t)u(t)$, where $A(t)$ is an unbounded operator in a Banach space depending almost periodically on $t$. A general…

Dynamical Systems · Mathematics 2014-07-29 Bui Xuan Dieu , Luu Hoang Duc , Stefan Siegmund , Nguyen Van Minh

We consider operators of the form H+V where H is the one-dimensional harmonic oscillator and V is a zero-order pseudo-differential operator which is quasi-periodic in an appropriate sense (one can take V to be multiplication by a periodic…

Spectral Theory · Mathematics 2007-05-23 Daniel M. Elton

In this paper, we introduce some concepts of square-mean S-asymptotically $\omega$-periodic stochastic processes. Using the stochastic analysis method and the Banach contraction mapping principle, we establish the existence and uniqueness…

Dynamical Systems · Mathematics 2016-09-16 Shufen Zhao , Minghui Song

Quasianalytic classes are classes of infinitely differentiable functions that satisfy the analytic continuation property enjoyed by analytic functions. Two general examples are quasianalytic Denjoy-Carleman classes (of origin in the…

Complex Variables · Mathematics 2017-06-14 Edward Bierstone , Pierre D. Milman

Starting from the study of pseudodifferential operators with completely periodic symbols, we obtain results of continuity and invertibility of a class of Gabor operators on time-frequency invariant Banach spaces. As an applications we find…

Functional Analysis · Mathematics 2024-05-03 Gianluca Garello , Alessandro Morando

Motivated by a variety of representations of fractional powers of operators, we develop the theory of abstract Besov spaces $B^{ s, A }_{ q, X }$ for non-negative operators $A$ on Banach spaces $X$ with a full range of indices $s \in…

Functional Analysis · Mathematics 2020-06-15 Charles Batty , Chuang Chen
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