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Nelson Dunford, Jacob T. Schwartz. 16 . On the essential spectra of ordinary differential equations . Amer . J. Math . 76 , 831-838 ( 1954 ) . Hartman , P. , and Putnam , C. 1. The least cluster point of the spectrum of boundary value ...
Nelson Dunford, Jacob T. Schwartz. 16 . On the essential spectra of ordinary differential equations . Amer . J. Math . 76 , 831-838 ( 1954 ) . Hartman , P. , and Putnam , C. 1. The least cluster point of the spectrum of boundary value ...
Page 800
... essential spectrum . Amer . J. Math . 74 , 578–585 ( 1952 ) . A sufficient condition for an infinite discrete spectrum . Quart . Appl . Math . 11 , 484-486 ( 1953 ) . On the gap in the spectrum of the Hill equation . Quart . Appl . Math ...
... essential spectrum . Amer . J. Math . 74 , 578–585 ( 1952 ) . A sufficient condition for an infinite discrete spectrum . Quart . Appl . Math . 11 , 484-486 ( 1953 ) . On the gap in the spectrum of the Hill equation . Quart . Appl . Math ...
Contents
B Topological Preliminaries | 10 |
Metric Spaces | 23 |
Product Spaces | 31 |
Copyright | |
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A₁ Acad additive set function algebra Amer analytic arbitrary B-space B₁ ba(S Banach spaces Borel sets Cauchy sequence compact operator complex numbers contains continuous functions continuous linear converges convex set Corollary countably additive DEFINITION denote dense differential equations Doklady Akad Duke Math E₁ elements ergodic exists extension f₁ function defined function f Hausdorff space Hence Hilbert space homomorphism inequality integral L₁ L₁(S Lebesgue Lemma Let f linear functional linear map linear operator linear topological space measurable functions measure space metric space Nauk SSSR N. S. neighborhood non-negative normed linear space o-field open set operator topology positive measure space Proc PROOF properties proved real numbers reflexive Riesz Russian S₁ scalar semi-group sequentially compact Show subset subspace Suppose theory topological space u-integrable u-measurable u-null uniformly unit sphere valued function vector space weakly compact zero ΕΕΣ