Journal of Mathematical Inequalities · Volume 15, Issue 3 On (n,k)-quasi class Q∗ operators 15-68 Pages 1003-1018 DOI 10.7153/jmi-2021-15-68 Downloads Short PDF Full PDF PNG Authors Ilmi Hoxha Naim L. Braha Keywords (n,k)-quasi class Q∗ operators (n,k)-quasi-∗-paranormal operators spectrum continuity Subject classes 47B20 47A80 47B37