For proper lower semicontinuous functionals bounded from below which do not increase upon polarization, an improved version of Ekeland’s variational principle can be formulated in Banach spaces, which provides almost symmetric points
Squassina, M., On the Ekeland variational principle, <<JOURNAL OF FIXED POINT THEORY AND ITS APPLICATIONS>>, 2011; 10 (1): 191-195. [doi:10.1007/s11784-011-0048-x] [http://hdl.handle.net/10807/89758]
On the Ekeland variational principle
Squassina, MarcoPrimo
2011
Abstract
For proper lower semicontinuous functionals bounded from below which do not increase upon polarization, an improved version of Ekeland’s variational principle can be formulated in Banach spaces, which provides almost symmetric points
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