In the present work we establish for the first time a class of (P, m)-superquadratic functions
and look into its features. Using them, we come up with the Jensen and Hermite–Hadamard …

In this paper, we develop a concept of a logarithmically superquadratic function. Such a
class of functions is defined via superquadratic functions. We first establish some new …

Related to the theory of convex and subadditive functions, we investigate weakly
subquadratic mappings, that is, solutions of the inequality f (x+ y)+ f (x− y)⩽ 2 f (x)+ 2 f (y)(x …

Abstract Let (X,+) be a topological abelian group. We discuss regularity of solutions f: X→ R
of Hlawka's functional inequality f (x+ y)+ f (y+ z)+ f (x+ z)≤ f (x+ y+ z)+ f (x)+ f (y)+ f (z) …

Tech. Rep., Inst. Math., Univ. Debrecen 2016/9. REMARKS AND PROBLEMS AT THE
CONFERENCE ON INEQUALITIES AND APPLICATIONS, HAJDU Page 1 Tech. Rep., Inst …

Kézi Csaba Gábor Page 1 DE TTK 1949 Függvényegyenletek és csoporthatások;
szubkvadratikus függvények egyetemi doktori (PhD) értekezés Kézi Csaba Gábor …