級きゅう数すう

noun

series

Mathematical term for the sum of a sequence. Used in contexts like arithmetic series, geometric series, and power series.

• この級きゅう数すうは収しゅう束そくする。

  This series converges.

• 等とう比ひ級きゅう数すうの和わを求もとめる。

  Find the sum of the geometric series.