[Help-glpk] set intersection syntax problem

[Benson]

Hello all,

I have a little syntax problem:

set Sl{l in L} within S;               
set Sg{g in G} within S;          
set Sr{r in R} within S; 

set Sglr{g in G, l in L, r in R} within S; 
Sglr{g in G, l in L, r in R} :=  Sg[g] inter Sl[l] inter Sr[r];

# glpsol complains that there are problems for the last two lines, how do I 
correct this please? 

Regards,

BH
Hello all,

I have a little syntax problem:

set Sl{l in L} within S;               
set Sg{g in G} within S;          
set Sr{r in R} within S; 

set Sglr{g in G, l in L, r in R} within S; 
Sglr{g in G, l in L, r in R} :=  Sg[g] inter Sl[l] inter Sr[r];

# glpsol complains that there are problems for the last two lines, how do I correct this please? 

Regards,

BH