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

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Dirac operators in representation theory gan Huang, Jing-Song

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

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

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

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

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

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

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

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