Linear Operators: Spectral theory |
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Page 893
... bounded E - measurable functions on S into the B * -algebra of bounded operators on Hilbert space . Returning now to the general integral ff ( s ) E ( ds ) where E is merely a bounded additive operator valued set function , we observe ...
... bounded E - measurable functions on S into the B * -algebra of bounded operators on Hilbert space . Returning now to the general integral ff ( s ) E ( ds ) where E is merely a bounded additive operator valued set function , we observe ...
Page 900
... bounded function fo on S with f ( s ) for s in a set having E measure zero . If ƒ is E - measurable then fo is a bounded E - measurable function , i.e. , an element of the B * -algebra B ( S , E ) . The algebra EB ( S , E ) of E ...
... bounded function fo on S with f ( s ) for s in a set having E measure zero . If ƒ is E - measurable then fo is a bounded E - measurable function , i.e. , an element of the B * -algebra B ( S , E ) . The algebra EB ( S , E ) of E ...
Page 1240
... bounded above ( bounded below ) if there is a real number c such that ( Tx , x ) ≤ c ( x , x ) ( ( Tx , x ) c ( x , x ) ) for all x in D ( T ) . If T is bounded above or below we say that T is semi - bounded . The number c is called a ...
... bounded above ( bounded below ) if there is a real number c such that ( Tx , x ) ≤ c ( x , x ) ( ( Tx , x ) c ( x , x ) ) for all x in D ( T ) . If T is bounded above or below we say that T is semi - bounded . The number c is called a ...
Contents
SPECTRAL THEORY Self Adjoint Operators in Hilbert Space | 858 |
BAlgebras | 859 |
Commutative BAlgebras | 868 |
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Common terms and phrases
adjoint extension adjoint operator algebra analytic B-algebra Borel set boundary conditions boundary values bounded operator C₁ closed closure coefficients compact operator complex numbers continuous function converges Corollary deficiency indices Definition denote dense eigenvalues element equation essential spectrum Exercise exists finite dimensional follows from Lemma follows from Theorem follows immediately formal differential operator formally self adjoint formula Fourier function defined function f Hence Hilbert space Hilbert-Schmidt operator identity inequality integral interval isometric isomorphism kernel L₁ L₁(R L₂ L₂(I L₂(R Lemma Let f linear linearly independent mapping matrix measure neighborhood non-zero norm open set operators in Hilbert orthogonal orthonormal basis Plancherel's theorem positive preceding lemma PROOF prove real axis real numbers satisfies sequence solution spectral spectral theorem square-integrable subspace Suppose T₁ T₂ theory To(t topology tr(T unique unitary vanishes vector zero