立即
发表于 2025-3-28 15:02:14
,Spectral Analysis of a Dissipative Singular Schrödinger Operator in Terms of a Functional Model,t is, the combination into one group of the sets of eigenvectors and root vectors corresponding to some neighbouring points of the spectrum, is defined non-uniquely and, to a large extent, non-constructively. Hence, as a rule, the assertions concerning bases with brackets have the character of existence theorems.
玷污
发表于 2025-3-28 19:37:05
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