Ordinary differential operators 著者: Wang, Aiping 1977-, Zettl, Anton

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Dirac operators in representation theory 著者: Huang, Jing-Song

On the existence of the essential spectrum for a class of differential expressions having normal maximal extensions 著者: Castillo, Maritina T.

Perturbations of a class of ordinary differential expressions preserving the essential spectrum and the nullities 著者: Victoria, Marie Redina L. Mumpar

On the existence of the essential spectrum for a class of differential expressions 著者: Castillo, Maritina T.

Invariance theory, the heat equation, and the Atiyah-Singer index theorem 著者: Gilkey, Peter B.

Invariance theory, the heat equations and the atiyah-singer index theorem. 著者: Gilkey, Peter B.

Spectral theory and wave operators for the Schrndinger equation 著者: Berthier, A. M.

Generalized functions and fourier analysis, an introduction 著者: Challifour, John L.

On differential operators of infinite order 著者: Steen, Pleun van der