Mathematical Inequalities & Applications · Volume 27, Issue 1 Counter-examples concerning Breckner-convexity 27-09 Pages 127-135 DOI 10.7153/mia-2024-27-09 Downloads Short PDF Full PDF PNG Authors Attila Házy Judit Makó Keywords approximate convexity Breckner-convexity lower and upper Hermite-Hadamard inequalities Subject classes 39B22 39B12