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Remarks on Surjectivity of Gradient Operators [PDF]

open access: yesMathematics, 2020
Let X be a real Banach space with dual X∗ and suppose that F:X→X∗. We give a characterisation of the property that F is locally proper and establish its stability under compact perturbation.
Raffaele Chiappinelli, David E. Edmunds
doaj   +6 more sources

Some Results on Non-Archimedean Operators Theory [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
In this paper, we define the notions of semi-regular operator, analytical core, surjectivity modulus and the injectivity modulus of bounded linear operators on non-Archimedean Banach spaces over $\mathbb{K}.$ We give a necessary and sufficient condition ...
Jawad Ettayb
doaj   +1 more source

Linearization of discrete-time control system by state transformation [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2021
This paper presents necessary and sufficient linearizability conditions by state transformation for discrete-time multi-input nonlinear control system under the mild assumption on the surjectivity property and describes how to find the state ...
Tanel Mullari, Ülle Kotta
doaj   +1 more source

Properties of Finitely Supported Self - Mappings on the Finite Powerset of Atoms [PDF]

open access: yesComputer Science Journal of Moldova, 2021
The theory of finitely supported algebraic structures represents a reformulation of Zermelo-Fraenkel set theory in which every classical structure is replaced by a finitely supported structure according to the action of a group of permutations of ...
Andrei Alexandru
doaj  

Topological properties of cellular automata on trees [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
We prove that there do not exist positively expansive cellular automata defined on the full k-ary tree shift (for k>=2). Moreover, we investigate some topological properties of these automata and their relationships, namely permutivity, surjectivity ...
Gabriele Fici, Francesca Fiorenzi
doaj   +1 more source

Solutions for Some Mathematical Physics Problems Issued from Modeling Real Phenomena: Part 1

open access: yesAxioms, 2023
This paper brings together methods to solve and/or characterize solutions of some problems of mathematical physics equations involving p-Laplacian and p-pseudo-Laplacian.
Irina Meghea
doaj   +1 more source

A hierarchy in the family of real surjective functions

open access: yesOpen Mathematics, 2017
This expository paper focuses on the study of extreme surjective functions in ℝℝ. We present several different types of extreme surjectivity by providing examples and crucial properties.
Fenoy-Muñoz Mar   +3 more
doaj   +1 more source

Finite subgroups of automorphisms of K3 surfaces

open access: yesForum of Mathematics, Sigma, 2023
We give a complete classification of finite subgroups of automorphisms of K3 surfaces up to deformation. The classification is in terms of Hodge theoretic data associated to certain conjugacy classes of finite subgroups of the orthogonal group of the K3 ...
Simon Brandhorst, Tommy Hofmann
doaj   +1 more source

Nonlocal elliptic hemivariational inequalities

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
This paper is devoted to the existence of solutions for the hemivariational inequalities involving fractional Laplace operator by means of the well-known surjectivity result for pseudomonotone mappings.
Zhenhai Liu, Jinggang Tan
doaj   +1 more source

Subpullbacks and Po-flatness Properties of S-posets [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2014
In (Golchin A. and Rezaei P., Subpullbacks and flatness properties of S-posets. Comm. Algebra. 37: 1995-2007 (2009)) study was initiated of flatness properties of right -posets  over a pomonoid  that can be described by surjectivity of  corresponding to ...
A. Golchin, L. Nouri
doaj  

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