## Linear Operators: Spectral theory |

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If A ( 1 ) = 0 for each function in the domain of T , ( T ) which vanishes in a neighborhood of a , A will be

If A ( 1 ) = 0 for each function in the domain of T , ( T ) which vanishes in a neighborhood of a , A will be

**called**a boundary value at a . The concept of a boundary value at b is defined similarly . By analogy with Definition XII.4.25 ...Page 1451

The number c is

The number c is

**called**a bound for T , and the smallest ( largest ) such c is**called**the upper ( lower ) bound for T. If ( Tx , x ) 2 0 for all x in D ( T ) , then T is**called**nonnegative . 20 DEFINITION . Lett be a formally symmetric ...Page 1504

A point z , in the complex plane at which r , and r , are analytic is

A point z , in the complex plane at which r , and r , are analytic is

**called**a regular point of the operator . In the neighborhood of a regular point zo , there exists a unique analytic solution 7 ( z ) of the equation Lt = 0 with ...### What people are saying - Write a review

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### Contents

BAlgebras | 859 |

Miscellaneous Applications | 937 |

Compact Groups | 945 |

Copyright | |

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