• 제목/요약/키워드: conjugate isometry linear system

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Julia operators and linear systems

  • Yang, Mee-Hyea
    • 대한수학회논문집
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    • 제12권4호
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    • pp.895-904
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    • 1997
  • Let B(z) be a power series with operator coefficients where multiplication by B(z), T, is a contractive and everywhere defined transforamtion in the square summable power series. Then there is a Julia operator U for T such that $$ U = (T D)(\tilde{D}^* L) \in B(H \oplus D, K \oplus \tilde{D}), $$ where D is the state space of a conjugate canonical linear system with transfer function B(z).

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