Ordinary differential operators por Wang, Aiping 1977-, Zettl, Anton

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Dirac operators in representation theory por Huang, Jing-Song

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

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

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

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

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

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

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

On differential operators of infinite order por Steen, Pleun van der