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We suggest a new concept of functional-differential operators with constant delay on geometrical graphs that involves {\it global} delay parameter. Differential operators on graphs model various processes in many areas of science and…

Spectral Theory · Mathematics 2022-11-01 Sergey Buterin

In this paper, we clarified the relationship between continued fractions, determinants, and identities, making it easier to apply these methods systematically in other settings. In particular, we studied finite continued fractions from the…

General Mathematics · Mathematics 2026-04-14 Nikita Kalinin , Takao Komatsu

In this note we introduce some nonlinear extremal nonlocal operators that approximate the, so called, truncated Laplacians. For these operators we construct representation formulas that lead to the construction of what, with an abuse of…

Analysis of PDEs · Mathematics 2021-04-26 Isabeau Birindelli , Giulio Galise , Erwin Topp

This book is not meant to be another compendium of select inequalities, nor does it claim to contain the latest or the slickest ways of proving them. This project is rather an attempt at describing how most functional inequalities are not…

Analysis of PDEs · Mathematics 2012-01-17 Nassif Ghoussoub , Amir Moradifam

In this paper, we extend the Montogomery identities for the Riemann-Liouville fractional integrals. We also use this Montogomery identities to establish some new integral inequalities for convex functions.

Classical Analysis and ODEs · Mathematics 2010-05-10 M. Z. Sarikaya , H. Ogunmez

In the paper we prove several inequalities involving two isotonic linear functionals. We consider inequalities for functions with variable bounds, for Lipschitz and H\" older type functions etc. These results give us an elegant method for…

Functional Analysis · Mathematics 2016-12-02 Mea Bombardelli , Ludmila Nikolova , Sanja Varošanec

In the paper, three-dimensional Nijenhuis operators are studied that have differential singularities, i.e., such points at which the coefficients of the characteristic polynomials are dependent. The case is studied in which the…

Differential Geometry · Mathematics 2025-03-19 Dinmukhammed Akpan , Andrei Oshemkov

The suggested operator manifold formalism enables to develop an approach to the unification of the geometry and the field theory. We also elaborate the formalism of operator multimanifold yielding the multiworld geometry involving the…

High Energy Physics - Theory · Physics 2007-05-23 G. T. Ter-Kazarian

The paper provides a coherent presentation of an operator scheme, which is used in an approach to inverse problems of mathematical physics (the boundary control method). The scheme is based on the triangular factorization of operators. It…

Mathematical Physics · Physics 2024-01-30 M. I. Belishev

We obtain a characterization of the weighted inequalities for the Riesz transforms on weighted local Morrey spaces. The condition is sufficient for the boundedness on the same spaces of all Calder\'on-Zygmund operators suitably defined on…

Functional Analysis · Mathematics 2021-10-28 Javier Duoandikoetxea , Marcel Rosenthal

Using the theory of evolutionary equations, we consider abstract differential equations including non-local integral operators. After providing a condition for the well-posedness of the addressed equation we consider a numerical method of…

Numerical Analysis · Mathematics 2026-01-19 Sebastian Franz , Sascha Trostorff

We discover a new version of the celebrated Montgomery identity via quantum integral operators and establish certain quantum integral inequalities of Ostrowski type by using this identity. Relevant connections of the results obtained in…

General Mathematics · Mathematics 2019-07-09 Mehmet Kunt , Artion Kashuri , Tingsong Du

In the context of variable exponent Lebesgue spaces equipped with a lower Ahlfors measure we obtain weighted norm inequalities over bounded domains for the centered fractional maximal function and the fractional integral operator.

Analysis of PDEs · Mathematics 2009-07-31 Osvaldo Gorosito , Gladis Pradolini , Oscar Salinas

We first prove some weighted inequalities for compositions of functions on time scales which are in turn applied to establish some new dynamic Opial-type inequalities in several variables. Some generalizations and applications to partial…

Classical Analysis and ODEs · Mathematics 2016-05-31 Tran Dinh Phung

We consider parabolic PDEs associated with fractional type operators drifted by non-linear singular first order terms. When the drift enjoys some boundedness properties in appropriate Lebesgue and Besov spaces, we establish by exploiting a…

Analysis of PDEs · Mathematics 2022-06-16 Diego Chamorro , Stéphane Menozzi

The aim of this paper is to characterize a fractal operator associated with multivariate fractal interpolation functions (FIFs) and study the several properties of this fractal operator. Further, with the help of this operator, we…

Dynamical Systems · Mathematics 2023-10-20 Amit Bawalia , Vineeta Basotia , Ajay Prajapati

We present in this work a complete session in a Mathematica notebook. The aim of this notebook is to check identities in symmetric compositions. This notebook is a complement of our work [1] and it has all the explicit computations. We…

Rings and Algebras · Mathematics 2007-06-11 Pablo Alberca Bjerregaard , Candido Martin Gonzalez

In this paper we analyze an eigenvalue problem related to the nonlocal $p-$laplace operator plus a potential. After reviewing some elementary properties of the first eigenvalue of these operators (existence, positivity of associated…

Analysis of PDEs · Mathematics 2017-03-31 L. Del Pezzo , J. Fernandez Bonder , L. Lopez-Rios

The aim of the present paper is, firstly we study the concepts of (m, (q_1, ..., q_d))- partial isometries on a Hilbert space, secondly, we introduce the notion of m- invertibility of tuples of operators as a natural generalization of the…

Functional Analysis · Mathematics 2016-03-01 Ould Ahmed Mahmoud Sid Ahmed

We investigate uniqueness problems for an entire function that shares two small functions of finite order with their difference operators. In particular, we give a generalization of a result in $[2]$.

Complex Variables · Mathematics 2015-05-11 Zinelâabidine Latreuch , Abdallah El Farissi , Benharrat Belaidi