Characterizations of Some Classes of Functions Related to Karamata Theory
Mathematica Moravica, Tome 1 (1997) no. 1.

Voir la notice de l'article dans eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

In this paper we prove some characterizations of several classes of functions related to Karamata theory in terms of the corresponding index functions. 
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     author = {Dragan {\DJ}ur\v{c}i\'c},
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Dragan Đurčić. Characterizations of Some Classes of Functions Related to Karamata Theory. Mathematica Moravica, Tome 1 (1997) no. 1. https://geodesic-test.mathdoc.fr/item/MM3_1997_1_1_a4/