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The Operator Hilbert Space $$OH$$, Complex Interpolation and Tensor Norms
Gilles Pisier, Texas A&M University, College Station, TX
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Memoirs of the American Mathematical Society
1996; 103 pp; softcover
Volume: 122
ISBN-10: 0-8218-0474-X
ISBN-13: 978-0-8218-0474-2
List Price: US$42 Individual Members: US$25.20
Institutional Members: US\$33.60
Order Code: MEMO/122/585

In the recently developed duality theory of operator spaces (as developed by Effros-Ruan and Blecher-Paulsen) bounded operators are replaced by completely bounded ones, isomorphisms by complete isomorphisms, and Banach spaces by operator spaces. This allows for distinguishing between the various ways in which a given Banach space can be embedded isometrically into $$B(H)$$ (with $$H$$ being Hilbert). In this new category, several operator spaces which are isomorphic (as Banach spaces) to a Hilbert space play an important role. For instance the row and column Hilbert spaces and several other examples appearing naturally in the construction of the Boson or Fermion Fock spaces have been studied extensively.

One of the main results of this memoir is the observation that there is a central object in this class: there is a unique self dual Hilbertian operator space (denoted by $$OH$$ ) which seems to play the same central role in the category of operator spaces that Hilbert spaces play in the category of Banach spaces.

This new concept, called "the operator Hilbert space" and denoted by $$OH$$, is introduced and thoroughly studied in this volume.

Graduate students and research mathematicians interested in functional analysis.

• Introduction
• The operator Hilbert space
• Complex interpolation
• The $$oh$$ tensor product
• Weights on partially ordered vector spaces
• $$(2,w)$$-summing operators
• The gamma-norms and their dual norms
• Operators factoring through $$OH$$
• Factorization through a Hilbertian operator space
• On the "local theory" of operator spaces
• Open questions
• References