The K p , q -Compactness and K p , q -Null Sequences, and the K K p , q -Approximation Property for Banach Spaces.

Let K p , 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 K p , q , and an approximation property of the ideal of K p , q -compact operators. [ABSTRACT FROM AUTHOR]