Some non-selfadjoint problems on the circle

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I
dc.contributor	Universitat Politècnica de Catalunya. EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions
dc.contributor.author	Lubary Martínez, José Antonio
dc.contributor.author	Solà-Morales Rubió, Joan de
dc.date	1998
dc.identifier.uri	http://hdl.handle.net/2117/789
dc.language.iso	eng
dc.rights	Attribution-NonCommercial-NoDerivs 2.5 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/2.5/es/
dc.subject	Boundary value problems
dc.subject	non-selfadjoint operators
dc.subject	periodic boundary conditions
dc.subject	nonreal eigenvalues
dc.subject	multiplicities
dc.subject	Problemes de contorn
dc.subject	Valors limits, Problemes de
dc.subject	Classificació AMS::34 Ordinary differential equations::34B Boundary value problems
dc.subject	Classificació AMS::47 Operator theory
dc.title	Some non-selfadjoint problems on the circle
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The non-selfadjoint nature of some second order differential equations with periodic boundary conditions is exhibited by describing properties of its spectrum, such as geometric and algebraic multiplicities and existence of nonreal eigenvalues.