n-Convex Functions in Linear Spaces.
Necessary and sufficient conditions for generalized convexity
We give some necessary and sufficient conditions for an n-1 times differentiable function to be a generalized convex function with respect to an unrestricted n-parameter family.
Necessary and sufficient conditions for Schur geometrical convexity of the four-parameter homogeneous means.
Nonlinear contractive conditions: A comparison and related problems
We establish five theorems giving lists of nonlinear contractive conditions which turn out to be mutually equivalent. We derive them from some general lemmas concerning subsets of the plane which may be applied both in the single- or set-valued case as well as for a family of mappings. A separation theorem for concave functions is proved as an auxiliary result. Also, we discuss briefly the following problems for several classes of contractions: stability of procedure of successive approximations,...
Note on some Hadamard-type inequalities.
Notes on some inequalities for convex functions
Notes on some inequalities for convex sequences and for k-convex functions
Notes On Some Inequalities Of P. M. Vasić
Notwendige und hinreichende Bedingungen für (strenge) Konvexität, Pseudokonvexität und (strenge) Quasikonvexität einer quadratischen Funktion bezüglich einer konvexen Menge