On Sandwich Theorem for Delta-Subadditive and Delta-Superadditive Mappings
Sign Up to like & getrecommendations! Published in 2017 at "Results in Mathematics"
DOI: 10.1007/s00025-016-0627-7
Abstract: In the present paper, inspired by methods contained in Gajda and Kominek (Stud Math 100:25–38, 1991) we generalize the well known sandwich theorem for subadditive and superadditive functionals to the case of delta-subadditive and delta-superadditive… read more here.
Keywords: superadditive mappings; delta subadditive; subadditive delta; sandwich theorem ... See more keywords
The Sandwich theorem via Pataraia’s fixed point theorem
Sign Up to like & getrecommendations! Published in 2019 at "Positivity"
DOI: 10.1007/s11117-018-0595-0
Abstract: The Sandwich theorem (König in Archiv der Mathematik 23:500–1972, 1972) yields the existence of a linear functional sandwiched in between a given superlinear functional and a given sublinear functional. By combining an argument implicit in… read more here.
Keywords: pataraia; theorem; theorem via; sandwich theorem ... See more keywords
Sandwich theorem for m-convex functions
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2017.02.041
Abstract: Abstract A sandwich theorem for m-convex functions with m ∈ [ 0 , 1 ] is proved. The counterexamples to a sandwich type result for m-convex functions with 0 m 1 , presented in [2]… read more here.
Keywords: theorem convex; sandwich theorem; convex functions;