A Counterexample in Lp Approximation by Harmonic Functions
Keyword(s):
AbstractFor we show that the conditions for all open sets G, C2,q denoting Bessel capacity, are not sufficient to characterize the compact sets X with the property that each function harmonic on and in Lp(X) is the limit in the Lp norm of a sequence of functions which are harmonic on neighbourhoods of X.
2021 ◽
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1987 ◽
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1988 ◽
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Vol 298
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