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

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Dirac operators in representation theory di Huang, Jing-Song

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

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

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

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

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

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

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

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