Autor: |
Gołębiewska, Anna, Stefaniak, Piotr |
Rok vydání: |
2018 |
Předmět: |
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Druh dokumentu: |
Working Paper |
Popis: |
In this paper we study an index of a critical orbit, defined in terms of the degree for invariant strongly indefinite functionals. We establish a relationship of this index with the index of a critical point of the mapping restricted to the space normal to the orbit. The second aim of the article is to use the index of a critical orbit to prove the bifurcation of nontrivial solutions of nonlinear elliptic systems with Neumann boundary conditions. We consider also the existence of unbounded sets of solutions of such systems. |
Databáze: |
arXiv |
Externí odkaz: |
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