I have this expression that i am confused about: $ \sum_{\forall i \in I(a)} D_{j,i}.x_i \geq 1 $ , $ \forall C_j \in J(a) $
Does it equal to the following one: $ \sum_{i \in I(a)} D_{1,i}.x_i \geq 1 $ , $ \sum_{\forall i \in I(a)} D_{2,i}.x_i \geq 1 $, ..., $ \sum_{\forall i \in I(a)} D_{n,i}.x_i \geq 1 $, $ $ if $max(j)$ =$n$ ?
Otherwise how to comprehend the j index in the expression, and it affects the expression