Mathematical Inequalities & Applications · Volume 12, Issue 4 Asymptotic estimates for approximation numbers of the Hardy operator in Q-Banach spaces 12-65 Pages 815-825 DOI 10.7153/mia-12-65 Downloads Short PDF Full PDF PNG Authors Elena N. Lomakina Keywords integral operators Lebesgue spaces approxomation numbers Subject classes 47B38 26D10