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

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Dirac operators in representation theory 由 Huang, Jing-Song

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

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

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

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

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

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

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

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