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 1936
Let I = E + + En where Ej , En are bounded , disjoint projections in X , each commuting with the bounded operator T. Then T is a spectral operator if and only if each restriction T | E ; X is a spectral operator .
Let I = E + + En where Ej , En are bounded , disjoint projections in X , each commuting with the bounded operator T. Then T is a spectral operator if and only if each restriction T | E ; X is a spectral operator .
Page 2094
Restrictions and quotients . Theorem 3.10 shows that if a spectral operator Te B ( X ) is reduced by a closed subspace Y 5 * and one of its complements ( that is , if T commutes with some projection of X onto Y ) , then the restriction ...
Restrictions and quotients . Theorem 3.10 shows that if a spectral operator Te B ( X ) is reduced by a closed subspace Y 5 * and one of its complements ( that is , if T commutes with some projection of X onto Y ) , then the restriction ...
Page 2228
If o is a Borel set , and T is a spectral operator with resolution of the identity E , then the restriction T | E ( 0 ) X of T to E ( Q ) X is a spectral operator whose resolution of the identity is the restriction of E to E ( o ) X ...
If o is a Borel set , and T is a spectral operator with resolution of the identity E , then the restriction T | E ( 0 ) X of T to E ( Q ) X is a spectral operator whose resolution of the identity is the restriction of E to E ( o ) X ...
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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