Offstage
发表于 2025-3-23 10:04:06
Canonical Differential Equations of Hilbert-Schmidt Type, property that the selfadjoint operators associated to a canonical system have resolvents of Hilbert-Schmidt type in terms of the Hamiltonian . as well as in terms of the associated Titchmarsh-Weyl coefficient.
记忆法
发表于 2025-3-23 16:36:38
Normal Matrices in Degenerate Indefinite Inner Product Spaces,ns, the notion of an adjoint is introduced: the adjoint of a matrix is defined as a linear relation which is a matrix if and only if the inner product is nondegenerate. This notion is then used to give alternative definitions of selfadjoint and unitary matrices in degenerate inner product spaces and
intention
发表于 2025-3-23 18:44:05
A Necessary Aspect of the Generalized Beals Condition for the Riesz Basis Property of Indefinite Sted generalized one hand Beals condition was found for this Riesz basis property. Now using a new criterion of Parfyonov we show that already the old approach gives rise to a necessary and sufficient condition for the Riesz basis property under certain additional assumptions.
dysphagia
发表于 2025-3-24 02:13:21
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Endoscope
发表于 2025-3-24 02:37:47
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泰然自若
发表于 2025-3-24 09:23:54
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我不明白
发表于 2025-3-24 14:37:19
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inspired
发表于 2025-3-24 16:56:32
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STELL
发表于 2025-3-24 21:59:22
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征税
发表于 2025-3-24 23:48:09
0255-0156 erial: .This volume contains contributions written by participants of the 4th Workshop on Operator Theory in Krein Spaces and Applications, which was held at the TU Berlin, Germany, December 17 to 19, 2004. The workshop covered topics from spectral, perturbation and extension theory of linear operat