Remarks on saddle points of vector-valued functions

Yıl 2022, Cilt: 5 Sayı: 1, 72 - 77, 31.03.2022

In-sook Kim

https://doi.org/10.53006/rna.1086597

https://izlik.org/JA66ND89KY

Öz

Using a coincidence theorem for multimaps, we prove the existence of a saddle point for vector-valued functions in topological vector spaces by means of scalarized maps.
Moreover, we discuss minimax theorems as a consequence of the saddle point theorem for real-valued functions.

Anahtar Kelimeler

saddle point , minimax theorem , coincidence theorem , upper (lower) semicontinuity , multimap

Kaynakça

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