## Linear Operators: General theory |

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theory . Mat . Sbornik N. S. 33 ( 75 ) , 597-626 ( 1953 ) . (

, 720 ( 1954 ) . 9 . The theory of self - adjoint extensions of semi - bounded ...

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**Russian**) Math . Rev. 11 , 670 ( 1950 ) . 8 . On the trace formula in perturbationtheory . Mat . Sbornik N. S. 33 ( 75 ) , 597-626 ( 1953 ) . (

**Russian**) Math . Rev. 15, 720 ( 1954 ) . 9 . The theory of self - adjoint extensions of semi - bounded ...

Page 781

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1951 ) . 2. Expansions in characteristic functions of differential equations of the

second order . Gosudarstv . Izdat . Tehn . - Teor . Lit. , Moscow - Leningrad , 1950

.

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**Russian**) Math . Rev. 11 , 116 ( 1950 ) . Amer . Math . Soc . Translation no . 59 (1951 ) . 2. Expansions in characteristic functions of differential equations of the

second order . Gosudarstv . Izdat . Tehn . - Teor . Lit. , Moscow - Leningrad , 1950

.

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operators with infinite deficiency indices and their orthogonal extensions .

Doklady Akad . Nauk SSSR ( N. S. ) 87 , 11-14 ( 1952 ) . (

14 , 882 ( 1953 ) ...

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**Russian**. English summary ) Math . Rev. 6 , 276 ( 1945 ) . 15. Isometricoperators with infinite deficiency indices and their orthogonal extensions .

Doklady Akad . Nauk SSSR ( N. S. ) 87 , 11-14 ( 1952 ) . (

**Russian**) Math . Rev.14 , 882 ( 1953 ) ...

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### Contents

Preliminary Concepts | 1 |

B Topological Preliminaries | 10 |

quences | 26 |

Copyright | |

81 other sections not shown

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### Common terms and phrases

Acad algebra Amer analytic applied arbitrary assumed B-space Banach Banach spaces bounded called clear closed compact complex condition contains continuous functions converges convex Corollary countably additive defined DEFINITION denote dense determined differential disjoint Doklady Akad element equation equivalent everywhere Exercise exists extension field finite follows function defined function f given Hence Hilbert space implies inequality integral interval isomorphism Lebesgue Lemma limit linear functional linear operator linear space mapping Math meaning measure space metric neighborhood norm operator positive measure problem Proc proof properties proved respect Russian satisfies scalar seen semi-group separable sequence set function Show shown sphere statement subset sufficient Suppose Theorem theory topological space topology transformations u-measurable uniform uniformly unique unit valued vector weak weakly compact zero