Some new classes of Kadison-Singer lattices in Hilbert spaces |
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Authors: | YuanHong Ren WenMing Wu |
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Institution: | 1. College of Mathematical Sciences, Chongqing Normal University, Chongqing, 400047, China
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Abstract: | Let $\mathcal{N}$ be a maximal and discrete nest on a separable Hilbert space $\mathcal{H},E_\xi$ the projection from $\mathcal{H}$ onto the subspace ?ξ] spanned by a particular separating vector ξ for $\mathcal{N}'$ and Q the projection from $\mathcal{K} = \mathcal{H} \oplus \mathcal{H}$ onto the closed subspace $\left\{ {\left( {\eta ,\eta } \right):\eta \in \mathcal{H}} \right\}$ . Let $\mathcal{L}$ be the closed lattice in the strong operator topology generated by the projections and Q. We show that $\mathcal{L}$ is a Kadison-Singer lattice with trivial commutant, i.e., $\mathcal{L}' = \mathbb{C}I$ . Furthermore, we similarly construct some Kadison-Singer lattices in the matrix algebras M 2n (?) and M 2n?1(?). |
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Keywords: | projection reflexive Kadison-Singer lattice matrix algebra |
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