Resumo

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

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

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )