Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Aequationes Mathemat...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Aequationes Mathematicae
Article . 1985 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1985
Data sources: zbMATH Open
versions View all 2 versions
addClaim

Functional differential equations of the cauchy-kowalevsky type

Functional differential equations of the Cauchy-Kowalevsky type
Authors: Walter, Wolfgang;

Functional differential equations of the cauchy-kowalevsky type

Abstract

Hintergrund dieser Untersuchungen sind z.B. partielle Differentialgleichungssysteme \[ u_ t(t,z)=c(t,z,u(t-h_ 1,z)...)+\sum^{n}_{i=1}B_ i(t,z,u(t-h^ i_ 1,z\quad),...)u_{z_ i}(t-h'\!_ i,z) \] mit Verschiebungen in t. Anfangswerte werden daher nicht nur längs \(t=0\), \(z\in \Omega c{\mathbb{C}}^ n\), sondern in \(G_ 0:=[-r,0]\times \Omega\) (r\(\geq 0)\) vorgegeben; t is reell; G sei ein Kegel über \(\Omega\). Allgemein wird das Problem so formuliert: \(u_ t(t,z)=f(t,z,u(\cdot))\) in G, \(u(t,z)=\phi (t,z)\) in \(G_ 0\); wobei u(\(\cdot)\) ausdrücken soll, daß hier zu jedem t verschiedene Werte von u aus \(G_ 0\cup G\) eingehen können. H sei die Menge der Funktionen \(u\in C^ 0(G,{\mathbb{C}}^ m)\), die holomorph in z sind; \(H_ 0\) die Funktionen \(u\in C^ 0(G\cup G_ 0,{\mathbb{C}}^ m)\), die holomorph in z sind mit \(u=0\) auf \(G_ 0\). \(H^ p\), \(H^ p_ 0\) \((p>0)\) seien Banachräume der Funktionen aus H, \(H_ 0\) mit endlicher Norm \(\| u\|_ p:=\sup_{G}| u(t,z)| d^ p(t,z)\) wobei d(t,z) vom Verf. geeignet gefunden wurde [Am. Math. Mon. 92, 115-126 (1985; Zbl 0576.35002)]. Das Problem ist faktorisiert \(u=IFu\), \(u\in H_ 0\) (nachdem auf homogene Anfangswerte transformiert wurde). Dabei ist \(I:H^{p+1}\to H^ p_ 0\) eine Integration, deren Eigenschaften wesentlich sind, und \(F: M\to H^{p+1}\), \(M\subset H^ p_ 0\) mit \((Fu)(t,z):=f(t,z,u(\cdot))\) sei Lipschitzstetig. Im Fall \(Fu=Lu+b\) mit \(L: H^ p_ 0\to H^{p+1}\) linear und beschränkt ist sofort der Banachsche Fixpunktsatz anwendbar. Beispiele hierzu sind: Matrizenmultiplikation \((Au)(t,z):=A(t,z)u(t,z)\) unter verschiedenen Voraussetzungen; Verschiebungen \((\delta_ hu)(t,z):=u(t-h,z)\) mit \(0

Country
Germany
Keywords

Cauchy problem, Partial functional-differential equations, existence, uniqueness, contraction principle, Cauchy-Kovalevskaya theorems, Article, functional differential equations, 510.mathematics, Banach spaces of continuous, differentiable or analytic functions, Cauchy-Kowalevsky theorem

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    4
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Top 10%
Average
Green