Opuscula Math. 34, no. 4 (2014), 725-732
http://dx.doi.org/10.7494/OpMath.2014.34.4.725
Opuscula Mathematica
On a new critical point theorem and some applications to discrete equations
Marek Galewski
Elżbieta Galewska
Abstract. Using the Fenchel-Young duality we derive a new critical point theorem. We illustrate our results with solvability for certain discrete BVP. Multiple solutions are also considered.
Keywords: critical point, multiplicity, discrete equation, Fenchel-Young transform.
Mathematics Subject Classification: 49J27, 39A12, 39A10.
- Marek Galewski
- Technical University of Lodz, Institute of Mathematics, Wolczanska 215, 90-924 Lodz, Poland
- Elżbieta Galewska
- Technical University of Lodz, Centre of Mathematics and Physics, Al. Politechniki 11, 90-924 Lodz, Poland
- Received: 2014-02-23.
- Revised: 2014-04-04.
- Accepted: 2014-04-07.