On (M, N)-convex functions

József Sándor and Edith Egri
Notes on Number Theory and Discrete Mathematics, ISSN 1310-5132
Volume 21, 2015, Number 4, Pages 40—47
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Authors and affiliations

József Sándor
Babes–Bolyai University, Department of Mathematics,
Cluj-Napoca, Romania

Edith Egri
Babes–Bolyai University, Department of Mathematics,
Cluj-Napoca, Romania

Abstract

We consider certain properties of functions f : JI (I, J intervals) such that
f(M(x, y)) ≤ N(f(x), f(y)), where M and N are general means. Some results are extensions of the case M = N = L, where L is the logarithmic mean.

Keywords

  • Mean
  • Logarithmic mean
  • Identric mean
  • Integral mean
  • Convex or concave functions with respect to a mean
  • Subadditive functions
  • Continuity

AMS Classification

  • 26A51
  • 26D99
  • 39B72

References

 

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Cite this paper

Sándor, J., & Egri, E. (2015). On (M, N)-convex functions. Notes on Number Theory and Discrete Mathematics, 21(4), 40-47.

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