> Could you tell me how can I calculate
>
> minimize obj :
> max({i in 1..4}: abs(x[i]));
Note that obj >= x[i] and obj >= -x[i] implies obj >= abs(x[i]), and the
latter for all i implies obj >= max abs(x[i]); thus
s.t. aaa{i in 1..4}: obj >= x[i];
s.t. bbb{i in 1..4}: obj >= -x[i];
minimize obj;
>
> or
> minimize obj :
> max({i in 1..4}: min(x[i]);
Over which domain is min(x[i]) calculated?
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