Mathematical Inequalities & Applications · Volume 13, Issue 1 On some extremalities in the approximate integration 13-13 Pages 165-174 DOI 10.7153/mia-13-13 Downloads Short PDF Full PDF PNG Authors Szymon Wąsowicz Keywords approximate integration error bounds extremalities Hadamard–type inequalities higher order convexity quadrature rules support theorems Subject classes 26D15 41A55 41A80 26A51 65D30 65D32