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Existence of Two Periodic Solutions to General Anisotropic Euler-Lagrange Equations

Abstract

Abstract. This paper is concerned with the following Euler-Lagrange system d/dtLv(t,u(t), ̇u(t)) =Lx(t,u(t), ̇u(t)) for a.e.t∈[−T,T], u(−T) =u(T), Lv(−T,u(−T), ̇u(−T)) =Lv(T,u(T), ̇u(T)), where Lagrangian is given by L=F(t,x,v) +V(t,x) +〈f(t),x〉, growth conditions aredetermined by an anisotropic G-function and some geometric conditions at infinity.We consider two cases: with and without forcing termf. Using a general version ofthe mountain pass theorem and Ekeland’s variational principle we prove the existenceof at least two nontrivial periodic solutions in an anisotropic Orlicz-Sobolev space.

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Copyright (2021 The Mathematical Society of the Republic of China)

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
TAIWANESE JOURNAL OF MATHEMATICS no. 25, pages 409 - 425,
ISSN: 1027-5487
Language:
English
Publication year:
2021
Bibliographic description:
Chmara M.: Existence of Two Periodic Solutions to General Anisotropic Euler-Lagrange Equations// TAIWANESE JOURNAL OF MATHEMATICS -Vol. 25,iss. 2 (2021), s.409-425
DOI:
Digital Object Identifier (open in new tab) 10.11650/tjm/200902
Verified by:
Gdańsk University of Technology

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