導どう手しゅ

noun

conductor (class field theory)

Technical term in algebraic number theory; refers to an ideal that measures ramification in abelian extensions.

• 類るい体たい論ろんでは、導どう手しゅは分ぶん岐きを記き述じゅつする重じゅう要ような不ふ変へん量りょうである。

  In class field theory, the conductor is an important invariant that describes ramification.