## Linear Operators: Spectral theory |

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**Math**. 76 , 831-838 ( 1954 ) . Hartman , P. , and Putnam , C. 1 . The least cluster point of the spectrum of boundary value problems . Amer . J.**Math**. 70 , 847-855 ( 1948 ) . 2 . The gaps in the essential spectra of wave equations .Page 1844

**Math**. Ann . 125 , 366–393 ( 1953 ) . Moses , H. E. ( see Kay , I. ) Moskovitz , D. , and Dines , L. L. 1 . Convexity in a linear space with an inner product . Duke**Math**. J. 5 , 520-534 ( 1939 ) . 2 . On the supporting - plane property ...Page 1867

Canadian J.

Canadian J.

**Math**. 1 , 176-186 ( 1949 ) . 9 . The theory of representations for Boolean algebras . Trans . Amer .**Math**. Soc . 40 , 37-111 ( 1936 ) . 10 . Linear transformations in Hilbert space , I - III . I. Proc . Nat . Acad . Sci .### What people are saying - Write a review

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### Contents

BAlgebras | 861 |

Commutative BAlgebras | 868 |

Commutative BAlgebras | 874 |

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 complete Consequently constant contains continuous converges Corollary corresponding defined Definition denote dense derivatives 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 Nauk neighborhood norm obtained partial positive preceding present problem projection proof properties prove range regular remark representation respectively restriction result satisfies seen sequence singular solution spectral square-integrable statement subset subspace sufficiently Suppose symmetric Theorem theory topology transform unique vanishes vector zero