Mathematical term for the sum of a sequence. Used in contexts like arithmetic series, geometric series, and power series.
この級数は収束する。
This series converges.
等比級数の和を求める。
Find the sum of the geometric series.
power series
power series
alternating series
alternating series
convergent series
Compound of 級 (class, rank) and 数 (number). The term was coined in the context of Western mathematics to translate 'series'.