Weak type $(2,H)$ and weak cotype $(2,H)$ of operator spaces
Abstract
Recently an operator space version of type and cotype, namely type and cotype of operator spaces for and a subquadratic and homogeneous Hilbetian operator space were introduced and investigated by the author. In this paper we define weak type (resp. weak cotype ) of operator spaces, which lies strictly between type (resp. cotype ) and type for all (resp. cotype for all ). This is an analogue of weak type 2 and weak cotype 2 in the Banach space case, so we develop analogous equivalent formulations. We also consider weak- space, spaces with weak type and weak cotype simultaneously and establish corresponding equivalent formulations.
Cite
@article{arxiv.math/0502337,
title = {Weak type $(2,H)$ and weak cotype $(2,H)$ of operator spaces},
author = {Hun Hee Lee},
journal= {arXiv preprint arXiv:math/0502337},
year = {2007}
}
Comments
22 pages, Definition is broadened, and eigen value estimation for weak $H$-space has been added. Tsirelson type construction is removed