Abstract :
An operator T :X→Y between Banach spaces is said to be finitely strictly singular if for every ε > 0
there exists n such that every subspace E ⊆ X with dimE n contains a vector x such that T x < ε x .
We show that, for 1 p
Keywords :
Strictly singular operator , Zigzag vector , James space , invariant subspace
Journal title :
Journal of Functional Analysis
Journal title :
Journal of Functional Analysis