## Linear Operators: Spectral theory |

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Page 1040

yı ( ) is

yı ( ) is

**analytic**even at = im . It will now be shown that yz ( ) 2N Elīm ; T ) * R ( ā ; T ) * y vanishes which will prove that y ( a ) is**analytic**at all the points a = hm , so that y ( 2 ) can only fail to be**analytic**at the point i ...Page 1102

The determinant det ( I + zT , ) is an

The determinant det ( I + zT , ) is an

**analytic**( and even a polynomial ) function of z , if T , operates in finite - dimensional space , and hence more generally if Tn has a finite - dimensional range .Page 1492

... fixed number k of eigenvalues which are given by functions Pi ( 2 ) , ... , 8x ( 2 )

... fixed number k of eigenvalues which are given by functions Pi ( 2 ) , ... , 8x ( 2 )

**analytic**in U. ( The set e , is that isolated set of points in U in which two or more of these distinct**analytic**functions take on the same value . ) ...### What people are saying - Write a review

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### Contents

BAlgebras | 859 |

Bounded Normal Operators in Hilbert Space | 887 |

Miscellaneous Applications | 937 |

Copyright | |

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additive Akad algebra Amer analytic assume Banach spaces basis belongs Borel boundary conditions boundary values bounded called clear closed closure coefficients compact complex Consequently constant contains continuous converges Corollary corresponding defined Definition denote dense determined domain eigenvalues element equal equation essential spectrum evident Exercise exists extension finite follows formal differential operator formula function function f given Hence Hilbert space identity independent indices inequality integral interval Lemma limit linear mapping Math matrix measure multiplicity neighborhood norm obtained partial positive preceding present problem projection proof properties prove range regular remark representation respectively restriction result Russian satisfies seen sequence singular solution spectral square-integrable statement subset subspace sufficiently Suppose symmetric Theorem theory topology transform unique vanishes vector zero