Hi, I hope this can help you.
Bye
constraint(technology)$subset_of_tech(technology)… var(technology) =g= par(technology);
Hi, you must always reference to the original set (i, j)
for example:
set
i /i1i10/
j /j1j15/
h /h1*h40/
technology(i,j)
subset_of_tech(i,j)
;
technology(i,j)= some set definition
subset_of_tech(i,j)= some set definition
constraint(i,j,h)$(technology(i,j) and subset_of_tech(technology))… var(i,j,h) =g= par(i,j,h);
equation “constraint” applies to all pairs of values of (i, j) that belong to the subset “technology” and “subset_of_tech” and for all set h.
This happens because the “and” between the two subsets was used
Bye!