禁令
发表于 2025-3-26 21:46:53
A Note on the Dirac Operator with Kirchoff-Type Vertex Conditions on Metric Graphs,In this note we present some properties of the Dirac operator on noncompact metric graphs with . vertex conditions. In particular, we discuss its spectral features and describe the associated quadratic form.
commute
发表于 2025-3-27 04:38:41
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COM
发表于 2025-3-27 08:44:34
,Kreı̆n-Višik-Birman Self-Adjoint Extension Theory Revisited,The core results of the Kreı̆n-Višik-Birman theory of self-adjoint extensions of semi-bounded symmetric operators are reproduced, both in their original and in a more modern formulation, with a comprehensive discussion that includes missing details, elucidative steps, and intermediate results of independent interest.
muster
发表于 2025-3-27 12:24:21
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灌输
发表于 2025-3-27 16:05:08
Springer INdAM Serieshttp://image.papertrans.cn/m/image/626040.jpg
鸽子
发表于 2025-3-27 20:59:04
978-3-030-60455-4The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerl
两栖动物
发表于 2025-3-28 01:02:19
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Palliation
发表于 2025-3-28 04:53:55
Spectral Isoperimetric Inequality for the ,-Interaction on a Contour,on of a fixed strength, the support of which is a ..-smooth contour. Under the constraint of a fixed length of the contour, we prove that the lowest eigenvalue is maximized by the circle. The proof relies on the min-max principle and the method of parallel coordinates.
Hangar
发表于 2025-3-28 08:49:57
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MAG
发表于 2025-3-28 12:58:22
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