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math.OA2019★ 4 cited
Contractive projections and real positive maps on operator algebras
David P. Blecher, Matthew Neal
We study contractive projections, isometries, and real positive maps on algebras of operators on a Hilbert space. For example we find generalizations and variants of certain classi…
math.OA2019
On vector-valued characters for noncommutative function algebras
David P. Blecher, Louis E. Labuschagne
Let A be a closed subalgebra of a C*-algebra, that is a closed algebra of Hilbert space operators. We generalize to such operator algebras several key theorems and concepts fro…