Hi,
sum{i in I} ta[i]
is a linear function of ta[i].
max{i in I} ta[i]
is not a linear function of w[i]
This is what I read on one of your reply.
You also provided a solution for this
var ta{i in I};
var obj;
minimize err: obj;
s.t. c{i in I} obj >= ta[i];
I tried doing this but it gives me an error saying that
delay.mod:18: ta must be subscripted