Partial sum
= Partial sum
{title2=$S_n$}
{wiki}
For terms $(a_n)$, the $n$th partial sum is $S_n=\sum_{j=1}^n a_j$. A <series> converges when its sequence of partial sums converges.
= Partial sum
{title2=$S_n$}
{wiki}
For terms $(a_n)$, the $n$th partial sum is $S_n=\sum_{j=1}^n a_j$. A <series> converges when its sequence of partial sums converges.