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Morse theory and the calculus of variations

  • Anthony Tromba EMAIL logo
Published/Copyright: December 4, 2021

Abstract

We prove for the first time that classical Morse theory applies to functionals of the form

𝒥 ( u ) = 1 2 Ω A α β i j ( x ) u i x α u j x β 𝑑 x + Ω G ( x , u ) 𝑑 x

where u : Ω N , Ω n compact with C boundary Ω , u | Ω = φ , and we argue that this is the largest class to which Morse theory applies.

MSC 2010: 58E05; 49M30

Dedicated to Steve Smale on his 91st birthday



Communicated by Frank Duzaar


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Received: 2021-07-08
Accepted: 2021-10-08
Published Online: 2021-12-04
Published in Print: 2023-10-01

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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