I was reading some paper on Martin/Possion boundaries, but most of them concerned some kind of bounded cases. So I wondered, is there any boundary-like characterization of a kind there exists an $(n-1)$-dimensional manifold $S$ such that any harmonic function on $\Bbb R^n$ can be represented through a function/measure on $S$. Such $S$ is unique up too ...
2026-03-29 19:16:04.1774811764
Boundary characterization of harmonic functions on $\Bbb R^n$
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