Representations of Hardy Algebras: Absolute Continuity, Intertwiners, and Superharmonic Operators
Representations of Hardy Algebras: Absolute Continuity, Intertwiners, and Superharmonic Operators
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哈代代数的表示:绝对连续性、交织子和超调和算子
DOI:
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发表时间:
2010
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通讯作者:
B. Solel
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文献类型:
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作者:
P. Muhly;B. Solel
Suppose $${mathcal{T}_{+}(E)}$$ is the tensor algebra of a W*-correspondence E and H∞(E) is the associated Hardy algebra. We investigate the problem of extending completely contractive representations of $${mathcal{T}_{+}(E)}$$ on a Hilbert space to ultra-weakly continuous completely contractive representations of H∞(E) on the same Hilbert space. Our work extends the classical Sz.-Nagy–Foiaş functional calculus and more recent work by Davidson, Li and Pitts on the representation theory of Popescu’s noncommutative disc algebra.