Results 21 to 30 of about 163,347 (232)

Curves on K3 surfaces and modular forms [PDF]

open access: yes, 2012
We study the virtual geometry of the moduli spaces of curves and sheaves on K3 surfaces in primitive classes. Equivalences relating the reduced Gromov-Witten invariants of K3 surfaces to characteristic numbers of stable pairs moduli spaces are proven. As
Maulik, D.   +2 more
core   +2 more sources

A characterization of convex φ-functions [PDF]

open access: yesOpuscula Mathematica, 2012
The properties of four elements \((LPFE)\) and \((UPFE)\), introduced by Isac and Persson, have been recently examined in Hilbert spaces, \(L^p\)-spaces and modular spaces. In this paper we prove a new theorem showing that a modular of form \(\rho_{\Phi}(
Bartosz Micherda
doaj   +1 more source

Some Results on Normalized Duality Mappings and Approximating Fixed Points in Convex Real Modular Spaces

open access: yesمجلة بغداد للعلوم, 2021
In this paper, the concept of normalized duality mapping has introduced in real convex modular spaces. Then, some of its properties have shown which allow dealing with results related to the concept of uniformly smooth convex real modular spaces.
Salwa Salman Abed   +1 more
doaj   +1 more source

One-Local Retract and Common Fixed Point in Modular Metric Spaces

open access: yesAbstract and Applied Analysis, 2013
The notion of a modular metric on an arbitrary set and the corresponding modular spaces, generalizing classical modulars over linear spaces like Orlicz spaces, were recently introduced.
Afrah A. N. Abdou
doaj   +1 more source

Fixed point theorems in modular G-metric spaces

open access: yesJournal of Inequalities and Applications, 2021
We prove the existence and uniqueness of fixed points of some generalized contractible operators defined on modular G-metric spaces and also prove the modular G-continuity of such operators.
Godwin Amechi Okeke   +3 more
doaj   +1 more source

On the Lebesgue and Sobolev spaces on a time-scale [PDF]

open access: yesOpuscula Mathematica, 2019
We consider the generalized Lebesgue and Sobolev spaces on a bounded time-scale. We study the standard properties of these spaces and compare them to the classical known results for the Lebesgue and Sobolev spaces on a bounded interval.
Ewa Skrzypek   +1 more
doaj   +1 more source

Ćirić-Reich-Rus type weakly contractive mappings and related fixed point results in modular-like spaces with application

open access: yesAIMS Mathematics, 2022
In this article, we define a new space named the modular-like space with its related concepts to prove the existence of a fixed point and a point of coincidence for mappings on this space. Also, we defined Ćirić-Reich-Rus type weakly contractive mappings
Fatemeh Lael   +3 more
doaj   +1 more source

Property P in modular metric spaces

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: The aim of this paper is to present the concept of the generalized ∅−weak contractive condition involving various combinations of d(x,y) in modular metric spaces. Methods: Conventional theoretical methods of functional analysis.
Ljiljana Paunović   +3 more
doaj   +1 more source

Erratum: Abdou, A. A. N. and Khamsi, M.A. Fixed Points of Kannan Maps in the Variable Exponent Sequence Spaces p(·). Mathematics 2020, 8, 76

open access: yesMathematics, 2020
Kannan maps have inspired a branch of metric fixed point theory devoted to the extension of the classical Banach contraction principle. The study of these maps in modular vector spaces was attempted timidly and was not successful.
Afrah A. N. Abdou, Mohamed Amine Khamsi
doaj   +1 more source

Transplantation of Local Nets and Geometric Modular Action on Robertson-Walker Space-Times [PDF]

open access: yes, 2000
A novel method of transplanting algebras of observables from de Sitter space to a large class of Robertson-Walker space-times is exhibited. It allows one to establish the existence of an abundance of local nets on these spaces which comply with a ...
Buchholz, Detlev   +2 more
core   +2 more sources

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