Are there some standard references where basic facts about fractional-order (or at least integer-order) Sobolev spaces on non-compact manifolds are treated? More precisely I would like to be able to refer to a theorem saying that for any two choices of (countable number of) charts the resulting norms are equivalent.
2026-04-11 20:11:40.1775938300
Sobolev spaces on non-compact manifolds -- independence on charts
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