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math.FA2009
Almost invariant half-spaces of operators on Banach spaces
George Androulakis, Alexey I. Popov, Adi Tcaciuc +1
We introduce and study the following modified version of the Invariant Subspace Problem: whether every operator T on a Banach space has an almost invariant half-space, that is, a s…
math.FA2006
Classes of strictly singular operators and their products
George Androulakis, Pandelis Dodos, Gleb Sirotkin +1
V. D. Milman proved in \cite{Milman:70} that the product of two strictly singular operators on () or on is compact. In this note we utilize Schre…