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单词 Balayage operator
释义

Balayage operator

英语百科

Balayage

Balayage is a French word meaning scanning or sweeping.

In potential theory, a mathematical discipline, balayage is a method devised by Henri Poincaré for reconstructing a harmonic function in a domain from its values on the boundary of the domain.

In modern terms, the balayage operator maps a measure μ on a closed domain D to a measure ν on the boundary D, so that the Newtonian potentials of μ and ν coincide outside D. The procedure is called balayage since the mass is "swept out" from D onto the boundary.

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