NISHIO Hirokazu
[日本語]
[English]
足し算の順序の変更
結合法則
: $(a + b) + c = a + (b + c)$
1: $\sum_i \sum_j f(i, j) = \sum_j \sum_i f(i, j)$
(C)NISHIO Hirokazu / Converted from Markdown (ja)
Source:
[GitHub]
/
[Scrapbox]