# HW 3 Problem 3(a)

For problem 3(a) $\displaystyle \sum_{(h)}h_{(1)} S(h_{(2)}) \otimes h_{3} = h$ can we replace $\displaystyle \sum_{(h)}h_{(1)}S(h_{2})$ with $\epsilon(h)1$? Or is this not valid because $h_{(3)}$ is inside the sum?