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- W132015663 abstract "This is a talk about approximation and operators; more specifically, about approximation of semi-groups. For several reasons, the exposition will be in terms of self-adjoint operators in Hilbert space, although the central ideas are applicable to fairly general semi-groups. The self-adjoint case is both illustrative, and of prime importance in the theory of quantum fields, which is the source of many novel problems involving singular perturbations; and it has been developed much more than the general case.KeywordsHilbert SpaceSingular PerturbationFinite TypeMeasurable JunctionHilbert AlgebraThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W132015663 date "1972-01-01" @default.
- W132015663 modified "2023-09-26" @default.
- W132015663 title "Singular Perturbations of Semi-Group Generators" @default.
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- W132015663 doi "https://doi.org/10.1007/978-3-0348-7283-6_3" @default.
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