subfactorial

词形变化

subfactorials 复数 subfactorials

释义与例句

n.
  1. 1.

    The result of deranging a number. In equations, it is usually symbolised by an exclamation mark (!) before the number being deranged (as opposed to factorials, where the exclamation mark occurs after the number).

    数学

词源

From sub- + factorial.

来源：wiktionary