Results 101 to 110 of about 19,755 (210)

Continuity properties of nonlinear semigroups

open access: yesJournal of Functional Analysis, 1974
Let X be a topological space. By a semigroup on X we mean a family of maps {T(t)}t > 0 from X to itself satisfying (i) T(0) = identity, and (ii) T(s) T(t) = Z’(s + t) for all S, t > 0. It is usual to require that the maps {T(t))t > 0 satisfy certain properties related to continuity. In this paper we discuss several situations in which, by virtue of the
openaire   +1 more source

Mild solutions for semilinear fractional differential equations

open access: yesElectronic Journal of Differential Equations, 2009
This paper concerns the existence of mild solutions for fractional semilinear differential equation with non local conditions in the $alpha$-norm.
Gisele M. Mophou, Gaston M. N'Guerekata
doaj  

Perturbed functional and neutral functional evolution equations with infinite delay in Frechet spaces

open access: yesElectronic Journal of Differential Equations, 2008
This article shows sufficient conditions for the existence of mild solutions, on the positive half-line, for two classes of first-order functional and neutral functional perturbed differential evolution equations with infinite delay.
Mouffak Benchohra, Selma Baghli
doaj  

Nonlinear Semigroups Analytic on Sectors [PDF]

open access: yes, 1999
Matsumoto, Toshitaka   +2 more
core   +1 more source

Generalized result on the global existence of positive solutions for a parabolic reaction-diffusion model with an m × m diffusion matrix

open access: yesDemonstratio Mathematica
The aim of this work is to study the global existence in time of solutions for the tridiagonal system of reaction-diffusion by order mm. Our techniques of proof are based on compact semigroup methods and some L1{L}^{1}-estimates.
Barrouk Nabila, Abdelmalek Karima
doaj   +1 more source

Existence of solutions in the alpha-norm for partial differential equations of neutral type with finite delay

open access: yesElectronic Journal of Differential Equations, 2010
In this work, we prove results on the local existence of mild solution and global continuation in the alpha-norm for some class of partial neutral differential equations. We suppose that the linear part generates a compact analytic semigroup.
Khalil Ezzinbi   +2 more
doaj  

Nonlinear submeans on semigroups

open access: yesNonlinear submeans on semigroups
identifier:oai:t2r2.star.titech.ac.jp ...
openaire  

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