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pro vyhledávání: '"39B52, 13N15"'
Autor:
Kiss, Gergely, Laczkovich, Miklós
Let $R$ be an integral domain of characteristic zero. We prove that a function $D\colon R\to R$ is a derivation of order $n$ if and only if $D$ belongs to the closure of the set of differential operators of degree $n$ in the product topology of $R^R$
Externí odkaz:
http://arxiv.org/abs/1803.01025
