Results 61 to 70 of about 1,191 (241)

On the unique constructive solvability of Hammerstein equations

open access: yesElectronic Journal of Differential Equations, 2002
We study the unique constructive solvability of Hammerstein operator equation in Banach spaces using iterative and projection like methods. Some error estimates are also given.
Petronije S. Milojevic
doaj  

Differential inclusion systems with fractional competing operator and multi-valued fractional convection

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
The existence of solutions to a family of inclusion systems with fractional, possibly competing, elliptic operators, fractional convection, and homogeneous Dirichlet boundary conditions is established.
Jinxia Cen   +2 more
doaj   +1 more source

Relaxed submonotone mappings

open access: yesAbstract and Applied Analysis, 2003
The notions of relaxed submonotone and relaxed monotone mappings in Banach spaces are introduced and many of their properties are investigated. For example, the Clarke subdifferential of a locally Lipschitz function in a separable Banach space is relaxed
Tzanko Donchev, Pando Georgiev
doaj   +1 more source

Grammatical structures in mathematics: a personal view

open access: yesTeaching Statistics, Volume 48, Issue S1, Page S47-S52, Summer 2026.
Abstract The ability to read, write, and speak mathematics is critical to students becoming comfortable with statistical models and skills. Faster development of those skills may act as encouragement to further engage with the discipline. Vocabulary has been the focus of scholarship in existing literature on the linguistics of mathematics and ...
Tess O'Brien
wiley   +1 more source

The surjectivity problem for 2D cellular automata

open access: yes, 1994
The surjectivity problem for 2D cellular automata was proved undecidable in 1989 by Jarkko Kari. The proof consists in a reduction of a problem concerning finite tilings into the previous one. This reduction uses a special and very sophisticated tile set.
Durand, Bruno
core   +1 more source

A System of Generalized Variational-Hemivariational Inequalities with Set-Valued Mappings

open access: yesJournal of Applied Mathematics, 2013
By using surjectivity theorem of pseudomonotone and coercive operators rather than the KKM theorem and fixed point theorem used in recent literatures, we obtain some conditions under which a system of generalized variational-hemivariational inequalities ...
Zhi-bin Liu   +3 more
doaj   +1 more source

Identification of discontinuous parameters in double phase obstacle problems

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we investigate the inverse problem of identification of a discontinuous parameter and a discontinuous boundary datum to an elliptic inclusion problem involving a double phase differential operator, a multivalued convection term (a ...
Zeng Shengda   +3 more
doaj   +1 more source

Injectivity and surjectivity of the Dress map [PDF]

open access: yesJournal of Pure and Applied Algebra, 2016
For a nontrivial finite Galois extension $L/k$ (where the characteristic of $k$ is different from 2) with Galois group $G$, we prove that the Dress map $h_{L/k}: A(G) \to GW(k)$ is injective if and only if $L=k(\sqrtα)$ where $α$ is not a sum of squares in $k^\times$.
openaire   +2 more sources

Edge‐Length Preserving Embeddings of Graphs Between Normed Spaces

open access: yesJournal of Graph Theory, Volume 112, Issue 4, Page 491-506, August 2026.
ABSTRACT The concept of graph embeddability, initially formalized by Belk and Connelly and later expanded by Sitharam and Willoughby, extends the question of embedding finite metric spaces into a given normed space. A finite simple graph G = ( V , E ) is said to be ( X , Y )‐embeddable if any set of induced edge lengths from an embedding of G into a ...
Sean Dewar   +3 more
wiley   +1 more source

Surjectivity of isometries between weighted spaces of holomorphic functions

open access: yes, 2019
We examine the surjectivity of isometries between weighted spaces of holomorphic functions. We show that for certain classical weights on the open unit disc all isometries of the weighted space of holomorphic functions,Hvo(Δ), are surjective.
Rueda, Pilar, Boyd, Christopher
core   +1 more source

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