Atomic Boolean Subspace Lattices and Applications to the Theory of Bases
Spiros Argyros · Michael Lambrou · William Ellison Longstaff
Jan 1991 · American Mathematical Society: Memoirs of the American Mathematical Society Book 445 · American Mathematical Soc.
Ebook
94
Pages
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About this ebook
This book provides a bridge between the theory of bases of Banach spaces and the study of certain types (reflexive, non-self-adjoint) of operator algebras, offering a viewpoint common to both areas. The authors give a characterization of those families of sub-spaces of a Banach space that arise as the set of atoms of an atomic Boolean subspace lattice (ABSL). They obtain new examples of ABSLs, including some with one-dimensional atoms. The latter are shown to arise precisely from strong M-bases of the underlying space. The authors also discuss, for any given ABSL, the question of the strong-operator density of the sub-algebra of finite-rank operators in the algebra of all operators leaving every atom invariant; some affirmative results are presented. On a separable Hilbert space, the given ABSL satisfies this density property if and only if a certain extremely non-commutative "factor" of it does. In addition, several other areas of investigation in the theory of ABSLs are considered, including "selection" from atoms, "slicing" of atoms, and the double commutant property. The authors also provide many examples.
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