# Sheffer sequence

> English word · Noun

## Definitions
1. A polynomial sequence in which the index of each polynomial equals its degree, satisfying conditions related to the umbral calculus in combinatorics.

## Etymology
Named after Isador M. Sheffer.

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