The operator Fejer-Riesz theorem
classification
🧮 math.FA
keywords
fejer-riesztheoremoperatoraroundcenterclassicalfunctionsgeneralization
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The Fejer-Riesz theorem has inspired numerous generalizations in one and several variables, and for matrix- and operator-valued functions. This paper is a survey of some old and recent topics that center around Rosenblum's operator generalization of the classical Fejer-Riesz theorem.
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