互たがいに素そ

na-adjective, noun

coprime; relatively prime

Mathematical term for integers whose greatest common divisor is 1. Used as a noun or adjectival noun.

• 8と15は互たがいに素そである。

  8 and 15 are coprime.

• 互たがいに素そな二ふたつの整せい数すうを選えらぶ。

  Choose two integers that are relatively prime.

na-adjective, noun

disjoint (sets)

Mathematical term for sets that have no elements in common. Less common than the number-theoretic sense.

• 集しゅう合ごうAと集しゅう合ごうBが互たがいに素そであるとき、共きょう通つう部ぶ分ぶんは空くう集しゅう合ごうである。

  When sets A and B are disjoint, their intersection is the empty set.