同どう符ふ号ごう

noun, noun which may take the genitive case particle 'no'

same sign; matching sign

Mathematics term referring to numbers or quantities that share the same sign (both positive or both negative). Often used in the pattern 同符号の or 同符号である. Antonym: 異符号 (opposite sign).

See also: 異符号

• 同どう符ふ号ごうの数かずを足たすと、絶ぜっ対たい値ちの和わに同おなじ符ふ号ごうがつく。

  When you add numbers with the same sign, the sum gets the same sign as the sum of their absolute values.

• この式しきでは、aとbが同どう符ふ号ごうであることが前ぜん提ていだ。

  This formula assumes that a and b have the same sign.