Ordinary differential operators de réir Wang, Aiping 1977-, Zettl, Anton

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Dirac operators in representation theory de réir Huang, Jing-Song

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

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

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

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

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

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

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

On differential operators of infinite order de réir Steen, Pleun van der