| 单词 | square-free |
| 释义 | > as lemmassquare-free square-free adj. [translating German quadratfrei] Mathematics (of an integer) equal to the product of a set of different primes; not divisible by a perfect square. ΘΚΠ the world > relative properties > number > mathematical number or quantity > [adjective] > prime > other commona1398 unarithmetical1671 algebraic1912 square-free1960 insensitive1968 1960 Niven & Zuckerman Introd. Theory Numbers xi. 226 The set of square-free integers has natural density 6/π2. 1971 G. Higman in M. B. Powell & G. Higman Finite Simple Groups vi. 209 All elements have square-free order. < as lemmas |
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