degradation
发表于 2025-3-26 20:57:29
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FIS
发表于 2025-3-27 02:49:34
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Alveoli
发表于 2025-3-27 09:13:17
Second Order Perturbations of Divergence Type Operators with a Spectral Gap,struct operators of this type with a spectral gap.We also report on some recent results of Alama et al. (1992) concerning spectral properties of divergence form operators .where . is a non-negative operator whose coefficients tend to zero at ∞. Here we ask for eigenvalues of . + λ., λ > 0, in a spectral gap of ..
insomnia
发表于 2025-3-27 09:31:04
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类型
发表于 2025-3-27 15:13:19
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令人发腻
发表于 2025-3-27 20:09:35
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CON
发表于 2025-3-28 01:12:47
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cartilage
发表于 2025-3-28 03:53:24
,Spectral Invariance and Submultiplicativity for Fréchet Algebras with Applications to Pseudo-DifferConnected to the theory of pseudo-differential operators it turned out that for a perturbation theory and for analytic operator functions in these Fréchet algebras Ψ it is useful to consider the following classical properties I) The group Ψ. of invertible elements is open.
通情达理
发表于 2025-3-28 09:19:20
On the Weyl Quantized Relativistic Hamiltonian,This note discusses a general condition on essential selfadjointness of the Weyl quantized relativistic Hamiltonian and the path integral representation for its semigroup.
Implicit
发表于 2025-3-28 13:10:28
Spectral Asymptotics for the Family of Commuting Operators,Accurate spectral asymptotics for the family of com muting pseudo-differential operators are obtained. Some applica tions for highly accurate spectral asymptotics for operators with periodic Hamltonian flow is given.