Results 131 to 140 of about 174,550,829 (158)

Convergence of Sequences of Semigroups of Nonlinear Operators With an Application to Gas Kinetics [PDF]

open access: yesTransactions of the American Mathematical Society, 1973
Thomas G. Kurtz
exaly   +2 more sources

A Trotter-Lie Formula for Compactly Generated Semigroups of Nonlinear Operators

open access: yesJournal of Functional Analysis, 1976
AbstractA Trotter-Lie type formula for semigroups of nonlinear operators on a Banach space X into itself, which are generated by compact operators, is proved.
A Pazy
exaly   +2 more sources

An Exponential Limit Formula for Nonlinear Semigroups

open access: yesTransactions of the American Mathematical Society, 1970
In recent papers, many writers have developed the theory of semigroups of operators generated by nonlinear accretive operators. In the present paper, we construct this semigroup by means of an exponential limit formula, and then use this means of ...
Joel L. Mermin
exaly   +2 more sources
Some of the next articles are maybe not open access.

Degenerate Nonlinear Semigroups of Operators and Their Applications

2020
In this paper, we construct the conditions for the existence of a degenerate nonlinear resolving semigroup of shift operators for a semilinear Sobolev type equation. Based on the phase space method, we find the conditions for the existence of solutions to the Cauchy problem for a semilinear Sobolev type equation.
Ksenia V. Vasiuchkova   +2 more
openaire   +1 more source

Invariance of Closed Convex Sets Under Semigroups of Nonlinear Operators in Complex Hilbert Spaces

SUT Journal of Mathematics, 2001
Let \(K\) be a closed convex subset of a complex Hilbert space \(H\) and \(A\) a nonlinear quasi-\(m\)-accretive operator with domain \(D(A)\) dense in \(H\) (that is, \(A+\alpha\) is \(m\)-accretive in \(H\) for some \(\alpha\geq 0)\). Then \(-A\) generates a nonlinear \(C_0\)-semigroup \(\{S(t)\}_{t\geq 0}\) of type \(\alpha\) on \(H\).
Tomomi Yokota
exaly   +3 more sources

A Proof-Theoretic Metatheorem for Nonlinear Semigroups Generated by an Accretive Operator and Applications [PDF]

open access: yesSelecta Mathematica, New Series
Abstract We further develop the theoretical framework of proof mining, a program in mathematical logic that seeks to quantify and extract computational information from prima facie ‘non-computational’ proofs from the mainstream mathematical literature.
Nicholas Norbert Pischke
exaly   +3 more sources

AMENABLE SEMIGROUPS OF NONLINEAR OPERATORS IN UNIFORMLY CONVEX BANACH SPACES

Bulletin of the Australian Mathematical Society, 2018
In 1965, Browder proved the existence of a common fixed point for commuting families of nonexpansive mappings acting on nonempty bounded closed convex subsets of uniformly convex Banach spaces. The purpose of this paper is to extend this result to left amenable semigroups of nonexpansive mappings.
openaire   +1 more source

Analytic semigroups, degenerate elliptic operators and applications to nonlinear cauchy problems

Annali di Matematica Pura ed Applicata, 1989
The nonlinear problem \[ u_ t=\phi (\Theta (u))\Delta (\chi (u)),\quad x\text{ in } {\bar \Omega},\quad t\geq 0;\quad u(x,0)=u_ 0(x) \] is considered, where \(\Omega\) is a bounded domain in \({\mathbb{R}}^ n\) with \({\mathbb{C}}^{\infty}\) boundary. \(\phi\), \(\Theta\), \(\chi\) are smooth functions and \(u_ 0\) is positive and sufficiently regular.
openaire   +3 more sources

Nonlinear Semigroups and Evolution Governed by Accretive Operators.

1984
Abstract : This is a review paper which outlines the main points of the theory of nonlinear semigroups and evolution governed by accretive operators. The subject is now rather mature, so most of the principal ideas and results are not new. However, the presentation here is organized differently from that in other sources and does touch upon recent ...
openaire   +1 more source

Convergence of a hybrid algorithm for a reversible semigroup of nonlinear operators in Banach spaces

Nonlinear Analysis: Theory, Methods & Applications, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

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