= Sub =
[[유한합,finite_sum]]
[[무한합,infinite_sum]]
{
구체수학 02.합.07.무한합 - 기계인간 John Grib
https://johngrib.github.io/wiki/study/concrete-math/02-sums-07/
}

[[부분합,partial_sum]] =,partial_sum . partial_sum
{
WtEn:partial_sum

[[부분,part]]
}

[[direct_sum]] =,direct_sum . direct_sum
{
direct sum
WtEn:direct_sum
https://encyclopediaofmath.org/wiki/Direct_sum
}

[[가중합,weighted_sum]] - [[Srch:가중합,weighted_sum]]

= 표현 =
sum
summation

= Compare: =
[[곱,product]]