Abstract

TRIANA, JUAN  and  DE CASTRO, RODRIGO. The formal derivative operator and multifactorial numbers. Rev.colomb.mat. [online]. 2019, vol.53, n.2, pp.125-137.  Epub Mar 20, 2020. ISSN 0034-7426.

In this paper some properties, examples and counterexamples about the formal derivative operator defined with respect to context-free grammars are presented. In addition, we show a connection between the context-free grammar G={α→ αb r ; b→b r+1 } ties involving multifactorial numbers will be obtained by grammatical methods.

Keywords : Context-free grammars; formal derivative operator; multifactorial numbers.

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