The Kp,q-Compactness and Kp,q-Null Sequences, and the KKp,q-Approximation Property for Banach Spaces

Abstract

Let Kp,q (1≤p,q≤∞ with 1/p+1/q≥1) be the ideal of (p,q)-compact operators. This paper investigates the compactness and null sequences via Kp,q, and an approximation property of the ideal of Kp,q-compact operators.