Results 51 to 60 of about 930 (85)

The Theory of Reich's Fixed Point Theorem for Multivalued Operators

open access: yesFixed Point Theory and Applications, 2010
The purpose of this paper is to present a theory of Reich's fixed point theorem for multivalued operators in terms of fixed points, strict fixed points, multivalued weakly Picard operators, multivalued Picard operators, data dependence of the fixed ...
Moţ Ghiocel   +3 more
doaj  

Period preserving nonisospectral flows and the moduli space of periodic solutions of soliton equations

open access: yes, 1995
Flows on the moduli space of the algebraic Riemann surfaces, preserving the periods of the corresponding solutions of the soliton equations are studied.
Grinevich, P. G., Schmidt, M. U.
core   +1 more source

Fixed point theory for multivalued φ-contractions

open access: yesFixed Point Theory and Applications, 2011
The purpose of this paper is to present a fixed point theory for multivalued φ-contractions using the following concepts: fixed points, strict fixed points, periodic points, strict periodic points, multivalued Picard and weakly Picard operators ...
Lazăr Vasile
doaj  

The physics and the mixed Hodge structure of Feynman integrals [PDF]

open access: yes, 2014
This expository text is an invitation to the relation between quantum field theory Feynman integrals and periods. We first describe the relation between the Feynman parametrization of loop amplitudes and world-line methods, by explaining that the first ...
Vanhove, Pierre
core   +1 more source

Teoreme de punct fix pentru operatori multivoci contractivi in spatii metrice generalizate [PDF]

open access: yes
In this paper we give a xed point results for multivalued operators on generalized metric spaces endowed with a generalized w-distance. Then we study the data dependence for this new result.multivalued weakly Picard operator, w-distance, fxed point ...
Guran, Liliana
core   +1 more source

Admissible perturbations of a multivalued Picard operator: Ćirić contraction condition; fixed point and stability results

open access: yes
This paper studies strict fixed point and stability results for multivalued operators which does not satisfy a Ćirić type contraction condition, but their admissible perturbation does. We focus on the conditions imposed on the admissible perturbation $T_G$ of a Picard operator $T:X\rightarrow P(X)$ such that the strict fixed point and stability results
openaire   +2 more sources

Moduli spaces of flat tori and elliptic hypergeometric functions

open access: yes, 2016
In the genus one case, we make explicit some constructions of Veech on flat surfaces and generalize some geometric results of Thurston about moduli spaces of flat spheres as well as some equivalent ones but of an analytico-cohomological nature of Deligne-
Ghazouani, Selim, Pirio, Luc
core   +1 more source

Bayesian Parameter Identification for Turing Systems on Stationary and Evolving Domains. [PDF]

open access: yesBull Math Biol, 2019
Campillo-Funollet E   +2 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy