Linear Operators: Part III: Spectral Operators [by] Nelson Dunford and Jacob T. Schwartz, with the Assistance of William G. Bade and Robert G. Bartle, Volume 1 |
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Page 2285
Now let the Hilbert space H = { n - 1 Hn be the direct sum of the Hilbert spaces Hn . Elements of H will be denoted by the single letter h . We shall define a map A of X into H. Let D ( A ) = { zt | Enxe D ( An ) for all n and Ë A Enx ...
Now let the Hilbert space H = { n - 1 Hn be the direct sum of the Hilbert spaces Hn . Elements of H will be denoted by the single letter h . We shall define a map A of X into H. Let D ( A ) = { zt | Enxe D ( An ) for all n and Ë A Enx ...
Page 2286
For each bounded Borel function g on the plane let Š ( g ) denote the closure of AS ( g ) A - 1 . The correspondence q : S ( g ) → Š ( g ) preserves the operational calculus and Q = ssc MĒ ( da ) , boce λΕ ( αλ ) , a where tE ( e ) ...
For each bounded Borel function g on the plane let Š ( g ) denote the closure of AS ( g ) A - 1 . The correspondence q : S ( g ) → Š ( g ) preserves the operational calculus and Q = ssc MĒ ( da ) , boce λΕ ( αλ ) , a where tE ( e ) ...
Page 2436
Next , let C ( EM ) denote the set of all infinitely often differentiable complex valued functions defined in En and vanishing outside a bounded set , let geco ( En ) , and let g = f , with f e L2 ( En ) , so that , by the Plancherel ...
Next , let C ( EM ) denote the set of all infinitely often differentiable complex valued functions defined in En and vanishing outside a bounded set , let geco ( En ) , and let g = f , with f e L2 ( En ) , so that , by the Plancherel ...
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Contents
SPECTRAL OPERATORS | 1924 |
Introduction | 1927 |
Terminology and Preliminary Notions | 1929 |
Copyright | |
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adjoint operator Amer analytic apply arbitrary assumed B-space Banach space belongs Boolean algebra Borel set boundary conditions bounded bounded operator Chapter clear closed commuting compact complex constant contains continuous converges Corollary corresponding defined Definition denote dense determined differential operator domain elements equation equivalent established exists extension finite follows formal formula given gives Hence Hilbert space hypothesis identity inequality integral invariant inverse Lemma limit linear operator Math Moreover multiplicity norm perturbation plane positive preceding present problem projections PROOF properties prove range resolution resolvent restriction Russian satisfies scalar type seen sequence shown shows similar solution spectral measure spectral operator spectrum subset sufficiently Suppose Theorem theory topology unbounded uniformly unique valued vector zero