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Questions about partial differential equations of elliptic type. Often used in combination with the top-level tag ap.analysis-of-pdes.

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Elliptic regularity with negative Sobolev space on bounded or unbounded domains

I highly recommend François Treves' and Hörmander's books on these topics, but the ones you need are: Treves, F. (1975). Basic Linear Partial Differential Equations. Academic Press. In Chapter 3, it …
Gabriel Franceschi Libardi's user avatar