A simple proof of the mountain circle theorem

DOI10.4171/ZAA/1184zbMath1045.58007OpenAlexW2006556450MaRDI QIDQ1432992

S. Comparato

Publication date: 15 June 2004

Published in: Zeitschrift für Analysis und ihre Anwendungen (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.4171/zaa/1184

zbMATH Keywords

Brouwer degreeLjusternik-Schnirelman categoryFournier-Willem relative category

Mathematics Subject Classification ID

Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05)

Cites Work

• Dual variational methods in critical point theory and applications

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