Hi, I hope this can help you.

Bye

constraint(technology)$subset_of_tech(technology)… var(technology) =g= par(technology);

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 /i1*i10/
j /j1*j15/

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!