Narumi polynomial

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Pidduck polynomials

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Introduced by Narumi (1929).

Narumi polynomial (plural Narumi polynomials)

1. (mathematics) Any of a group of polynomials s_n(x) given by the generating function ${\displaystyle \displaystyle \sum s_{n}(x)t^{n}/n!=\left({\frac {t}{\log(1+t)}}\right)^{a}(1+t)^{x}}$.