## Linear Operators: Spectral theory |

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**Russian**) Math . Rev. 13 , 254 ( 1952 ) . Amer . Math . Soc . Translation no . 96 ( 1953 ) . 2 . On the deficiency index of differential operators . Doklady Akad . Nauk SSSR ( N.S. ) 64 , 151-154 ( 1949 ) . (**Russian**) Math . Rev.Page 1831

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**Russian**) Math . Rev. 11 , 670 ( 1950 ) . 8 . On the trace formula in perturbation theory . Mat . Sbornik N. S. 33 ( 75 ) , 597–626 ( 1953 ) . (**Russian**) Math . Rev. 15 , 720 ( 1954 ) . 9 . The theory of self - adjoint extensions of ...Page 1865

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**Russian**. English summary ) Math . Rev. 6 , 276 ( 1945 ) . 15 . Isometric operators with infinite deficiency indices and their orthogonal extensions . Doklady Akad . Nauk SSSR ( N. S. ) 87 , 11-14 ( 1952 ) . (**Russian**) Math . Rev.### 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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### Common terms and phrases

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 given Hence Hilbert space identity independent indices inequality integral interval Lemma limit linear mapping Math matrix measure multiplicity Nauk 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