Results 1 to 10 of about 392 (118)

Nonlinear extension of the quantum dynamical semigroup [PDF]

open access: yesQuantum, 2021
In this paper we consider deterministic nonlinear time evolutions satisfying so called convex quasi-linearity condition. Such evolutions preserve the equivalence of ensembles and therefore are free from problems with signaling.
Jakub Rembieliński, Paweł Caban
doaj   +1 more source

Koopman Operator Framework for Spectral Analysis and Identification of Infinite-Dimensional Systems

open access: yesMathematics, 2021
We consider the Koopman operator theory in the context of nonlinear infinite-dimensional systems, where the operator is defined over a space of bounded continuous functionals. The properties of the Koopman semigroup are described and a finite-dimensional
Alexandre Mauroy
doaj   +1 more source

Controllability of Nonlinear Boundary Value Control Systems in Banach Spaces Using Schauder Fixed Point Theorem [PDF]

open access: yesEngineering and Technology Journal, 2015
In this paper, sufficient conditions for controllability of nonlinear boundary value control system in Banach spaces are established. The results are obtained by using semigroup theory “compact semigroup”and some techniques of nonlinear functional ...
Naseif J. Al-Jawari, Imad N. Ahmed
doaj   +1 more source

New discussion concerning to optimal control for semilinear population dynamics system in Hilbert spaces

open access: yesNonlinear Analysis, 2022
The objective of our paper is to investigate the optimal control of semilinear population dynamics system with diffusion using semigroup theory. The semilinear population dynamical model with the nonlocal birth process is transformed into a standard ...
Rohit Patel   +4 more
doaj   +1 more source

Existence of Mild Solutions for Nonlocal Evolution Equations with the Hilfer Derivatives

open access: yesJournal of Function Spaces, 2023
The existence of mild solutions for Hilfer fractional evolution equations with nonlocal conditions in a Banach space is investigated in this manuscript.
Abu Bakr Elbukhari, Zhenbin Fan, Gang Li
doaj   +1 more source

Semigroup Approach to Semilinear Partial Functional Differential Equations with Infinite Delay

open access: yesJournal of Inequalities and Applications, 2007
We describe a semigroup of abstract semilinear functional differential equations with infinite delay by the use of the Crandall Liggett theorem. We suppose that the linear part is not necessarily densely defined but satisfies the resolvent estimates of ...
Hassane Bouzahir
doaj   +2 more sources

A Study on the Impact of Nonlinear Source Term in Black-Scholes Option Pricing Model

open access: yesAbstract and Applied Analysis, 2022
In this work, we study the effect of nonlinear source term in Black-Scholes model by finding the solution of it. We use the mathematical concepts of existence and uniqueness to arrive the conclusion. The transformation of the nonlinear equation into heat
P. Sozhaeswari   +3 more
doaj   +1 more source

An explicit construction of sunny nonexpansive retractions in Banach spaces

open access: yesFixed Point Theory and Applications, 2005
An explicit algorithmic scheme for constructing the unique sunny nonexpansive retraction onto the common fixed point set of a nonlinear semigroup of nonexpansive mappings in a Banach space is analyzed and a proof of convergence is given.
Simeon Reich, Arkady Aleyner
doaj   +2 more sources

Existence results for neutral evolution equations with nonlocal conditions and delay via fractional operator

open access: yesOpen Mathematics, 2022
In this paper, we study the existence of solutions for the neutral evolution equations with nonlocal conditions and delay in α\alpha -norm, which are more general than in many previous publications.
Zhang Xuping, Sun Pan
doaj   +1 more source

Existence for Nonautonomous Fractional Integrodifferential Equations with Nonlocal Conditions

open access: yesAbstract and Applied Analysis, 2013
We study the existence of mild solution of a class of nonlinear nonautonomous fractional integrodifferential equations with nonlocal conditions in a separable Banach space .
Fang Li
doaj   +1 more source

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