Multiple single-peaked solutions of a class of semilinear Neumann problems via the category of the domain boundary

DOI10.1007/S005260050109zbMath0917.35037OpenAlexW2052064494MaRDI QIDQ1271829

Nils Ackermann

Publication date: 5 August 1999

Published in: Calculus of Variations and Partial Differential Equations (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s005260050109

zbMATH Keywords

multiple positive solutionsconstrained variational approachhomotopy of sublevel setLyusternik-Schnirel'man category

Mathematics Subject Classification ID

Nonlinear boundary value problems for linear elliptic equations (35J65) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Variational methods for second-order elliptic equations (35J20)

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