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This paper deals with the generalized spectrum of continuously invertible linear operators defined on infinite dimensional Hilbert spaces. More precisely, we consider two bounded, coercive, and self-adjoint operators $\bc{A, B}: V\mapsto…

Numerical Analysis · Mathematics 2021-03-02 Tomáš Gergelits , Bjørn Fredrik Nielsen , Zdeněk Strakoš

The present paper is devoted to the boundedness of fractional integral operators in Morrey spaces defined on quasimetric measure spaces. In particular, Sobolev, trace and weighted inequalities with power weights for potential operators are…

Functional Analysis · Mathematics 2008-06-17 Eridani , Vakhtang Kokilashvili , Alexander Meskhi

We study fine potential theory and in particular partitions of unity in quasiopen sets in the case $p=1$. Using these, we develop an analog of the discrete convolution technique in quasiopen (instead of open) sets. We apply this technique…

Metric Geometry · Mathematics 2018-12-31 Panu Lahti

We propose a robust and scalable framework for variational Bayes (VB) that effectively handles outliers and contamination of arbitrary nature in large datasets. Our approach divides the dataset into disjoint subsets, computes the posterior…

Machine Learning · Statistics 2025-04-18 Carlos Misael Madrid Padilla , Shitao Fan , Lizhen Lin

It is known that the momentum operator canonically conjugated to the position operator for a particle moving in some bounded interval of the line {(with Dirichlet boundary conditions) is not essentially self-adjoint}: it has a continuous…

Mathematical Physics · Physics 2024-06-12 Fabio Bagarello , Jean-Pierre Gazeau , Camillo Trapani

Variational Inequality (VI) problems have attracted great interest in the machine learning (ML) community due to their application in adversarial and multi-agent training. Despite its relevance in ML, the oft-used strong-monotonicity and…

Optimization and Control · Mathematics 2024-02-09 Daniil Vankov , Angelia Nedich , Lalitha Sankar

We study a catching-up algorithm for a class of differential inclusions driven by maximal monotone operators with continuous perturbations. Using a decomposition of the monotone operator into the closed convex hull of its single-valued part…

Optimization and Control · Mathematics 2026-04-14 Tan H. Cao , Hassan Saoud

Using the theory of Hilbert direct integrals, we introduce and study a monotonicity-preserving operation, termed the integral resolvent mixture. It combines arbitrary families of monotone operators acting on different spaces and linear…

Optimization and Control · Mathematics 2024-08-13 Minh N. Bùi , Patrick L. Combettes

Based on the variable Hilbert scale interpolation inequality bounds for the error of regularisation methods are derived under range inclusions. In this context, new formulae for the modulus of continuity of the inverse of bounded operators…

Numerical Analysis · Mathematics 2010-05-24 Markus Hegland , Bernd Hofmann

Some concepts, such as non-compactness measure and condensing operators, defined on metric spaces are extended to uniform spaces. Such extensions allow us to locate, in the context of uniform spaces, some classical results existing in…

General Topology · Mathematics 2015-11-25 Raúl Fierro

We discuss a general technique that can be used to form a differentiable bound on the optima of non-differentiable or discrete objective functions. We form a unified description of these methods and consider under which circumstances the…

Machine Learning · Statistics 2012-12-21 Joe Staines , David Barber

Dynamics simulations of constrained particles can greatly aid in understanding the temporal and spatial evolution of biological processes such as lateral transport along membranes and self-assembly of viruses. Most theoretical efforts in…

Computational Physics · Physics 2017-03-03 Stefan Paquay , Remy Kusters

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

Let $(X,d,\mu)$ be a non-homogeneous metric measure space satisfying both the geometrically doubling and the upper doubling measure conditions. In this paper, the boundedness of multilinear fractional integral operator in this setting is…

Classical Analysis and ODEs · Mathematics 2016-02-19 Huajun Gong , Rulong Xie , Chen Xu

In this paper we consider a generalized version of bounded oscillation operators, involving new parameters in the definition, as well as considering the operators on vector-valued function spaces. With this definition we will capture some…

Classical Analysis and ODEs · Mathematics 2023-08-08 Grigori A. Karagulyan

We prove a sparse bound for the $m$-sublinear form associated to vector-valued maximal functions of Fefferman-Stein type. As a consequence, we show that the sparse bounds of multisublinear operators are preserved via $\ell^r$-valued…

Classical Analysis and ODEs · Mathematics 2017-09-28 Amalia Culiuc , Francesco Di Plinio , Yumeng Ou

A synergetic model describing the state of an ultrathin lubricant layer squeezed between two atomically smooth solid surfaces operating in the boundary friction mode has been developed further. To explain the presence of different operation…

Mesoscale and Nanoscale Physics · Physics 2014-01-20 Iakov A. Lyashenko , Nataliia N. Manko

In this paper the authors obtain a new equivalent norms of the Besov spaces of variable smoothness and integrability. Our main tools are the continuous version of Calderon reproducing formula, maximal inequalities and variable exponent…

Functional Analysis · Mathematics 2021-10-04 Douadi Drihem , Salah Ben Mahmoud

Poroelasticity can be classified with geophysics and describes the interaction between solids deformation and the pore pressure in a porous medium. The investigation of this effect is anywhere interesting where a porous medium and a fluid…

Geophysics · Physics 2025-06-06 Bianca Kretz , Willi Freeden , Volker Michel

We prove that for a homogeneous linear partial differential operator $\mathcal A$ of order $k \le 2$ and an integrable map $f$ taking values in the essential range of that operator, there exists a function $u$ of special bounded variation…

Analysis of PDEs · Mathematics 2023-10-06 Adolfo Arroyo-Rabasa