Journal of Mathematical Inequalities · Volume 15, Issue 1 Approximation properties of combination of multivariate averages on Triebel-Lizorkin spaces 15-27 Pages 357-374 DOI 10.7153/jmi-2021-15-27 Downloads Short PDF Full PDF PNG Authors Shaoyong He Keywords K-functional Triebel-Lizorkin space multivariate average Subject classes 41A17 42B35