Applications of degree for $S^1$-equivariant gradient maps to variational nonlinear problems with $S^1$-symmetries
نویسندگان
چکیده
منابع مشابه
Applications of Degree for S1-equivariant Gradient Maps to Variational Nonlinear Problems with S1-symmetries S
There are developed many topological methods which are powerful tools in the theory of critical points of functionals; see for example [2], [3], [5], [6], [9], [13]–[20], [22]–[25], [27]–[29], [32], [33], [43]–[45], [47], [48], [51], [59]. It happens quite often that functionals whose critical points are important in the theory of differential equations are invariant under an action of a compac...
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ژورنال
عنوان ژورنال: Topological Methods in Nonlinear Analysis
سال: 1997
ISSN: 1230-3429
DOI: 10.12775/tmna.1997.018