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math.FA2022
A strengthened Orlicz-Pettis theorem via Itô-Nisio
Ethan Sussman
In this note we deduce a strengthening of the Orlicz-Pettis theorem from the Itô-Nisio theorem. The argument shows that given any series in a Banach space which isn't summable (or…
math.AP2022
Hydrogen-like Schrödinger Operators at Low Energies
Ethan Sussman
Consider a Schrödinger operator on an asymptotically Euclidean manifold of dimension at least two, and suppose that the potential is of attractive Coulomb-like type. Using Vasy…