# Pidduck polynomial

> English word · Noun

## Definitions
1. Any of a group of polynomials sₙ(x) given by the generating function displaystyle ∑ₙ(s_n(x))/(n!)tⁿ=((1+t)/(1-t))ˣ(1-t)⁻¹.

## Etymology
Introduced by Pidduck (1910–1912).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pidduck-polynomial