Positive Solutions to Indefinite Problems

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Sprache: Englisch

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Beschreibung

This book is devoted to the study of positive solutions to indefinite problems. The monograph intelligibly provides an extensive overview of topological methods and introduces new ideas and results. Sticking to the one-dimensional setting, the author shows that compelling and substantial research can be obtained and presented in a penetrable way.

In particular, the book focuses on second order nonlinear differential equations. It analyzes the Dirichlet, Neumann and periodic boundary value problems associated with the equation and provides existence, nonexistence and multiplicity results for positive solutions. The author proposes a new approach based on topological degree theory that allows him to answer some open questions and solve a conjecture about the dependence of the number of positive solutions on the nodal behaviour of the nonlinear term of the equation. The new technique developed in the book gives, as a byproduct, infinitely many subharmonic solutions and globally defined positive solutions with chaotic behaviour. Furthermore, some future directions for research, open questions and interesting, unexplored topics of investigation are proposed.

Zusammenfassung

Deals with new, challenging problems in nonlinear analysis and solves several open problems and questions

Gives a good overview of existing methods and presents new ideas and results as well

Proposes open problems, research ideas and suggestions

Inhaltsverzeichnis

Introduction.- Part I - Superlinear indefinite problems.- Dirichlet boundary conditions.- More general nonlinearities f(t; s).- Neumann and periodic conditions: existence results.- Neumann and periodic conditions: multiplicity results.- Subharmonic solutions and symbolic dynamics.- Part II - Super-sublinear indefinite problems.- Existence results.- High multiplicity results.- Subharmonic solutions and symbolic dynamics.- Part III - Appendices.- Leray-Schauder degree for locally compact operators.- Mawhin's coincidence degree.- Maximum principles and a change of variable.- Bibliography.

Details

Erscheinungsjahr:	2018
Fachbereich:	Analysis
Genre:	Mathematik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Reihe:	Frontiers in Mathematics
Inhalt:	xxix 304 S.
ISBN-13:	9783319942377
ISBN-10:	3319942379
Sprache:	Englisch
Herstellernummer:	978-3-319-94237-7
Ausstattung / Beilage:	Paperback
Einband:	Kartoniert / Broschiert
Autor:	Feltrin, Guglielmo
Auflage:	1st ed. 2018
Hersteller:	Springer International Publishing Springer International Publishing AG Frontiers in Mathematics
Maße:	240 x 168 x 19 mm
Von/Mit:	Guglielmo Feltrin
Erscheinungsdatum:	05.12.2018
Gewicht:	0,565 kg