Astigmatism
发表于 2025-3-23 10:32:49
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accomplishment
发表于 2025-3-23 15:07:22
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不适当
发表于 2025-3-23 20:37:38
Unitary Systems and Characteristic Operator Functionsnput-output map or the associated transfer function. In the theory of characteristic operator functions the situation is different. Here the main operator ., which is a contraction, comes first and the characteristic operator function serves as a unitary invariant for ..
Gorilla
发表于 2025-3-24 01:02:03
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Cholesterol
发表于 2025-3-24 04:15:28
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Aesthete
发表于 2025-3-24 09:26:36
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啮齿动物
发表于 2025-3-24 12:45:24
https://doi.org/10.1007/b101825This chapter contains the Stone-Weierstrass theorem and the Gelfand-Naimark representation theorem for commutative Banach algebras with an involution. The latter theorem is used to derive the spectral theorem for a normal operator. The Gelfand-Naimark characterization of a .*-algebra as a closed *-subalgebra of operators is also presented.
Spongy-Bone
发表于 2025-3-24 15:37:18
Additive Lower-Upper Triangular Decompositions of OperatorsThe decomposition.maybe viewed as the analogue of the additive lower-upper triangular decomposition of a square matrix. In this chapter we study such decomposition for general operators. We begin with the first generalization of the matrix case.
Confound
发表于 2025-3-24 22:56:57
Block Toeplitz OperatorsThe first three sections of this chapter have an introductory character. Section 2 contains a short introduction to Laurent operators. In Section 3 the first properties of block Toeplitz operators are derived. Sections 4 and 5 develop the Fredholm theory of block Toeplitz operators defined by continuous functions.
从属
发表于 2025-3-25 00:41:08
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