Nonlinear $n$-term approximation of harmonic functions from shifts of the Newtonian kernel
2020 ◽
Vol 373
(5)
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pp. 3117-3176
2002 ◽
Vol 39
(1-2)
◽
pp. 87-96
Keyword(s):
1975 ◽
Vol 2
(10)
◽
pp. 423-426
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Keyword(s):