$title checks if empty equation are feasible (EMPTY1,SEQ=60) * this was reported by Gary Goldstein, GT00487 variable x1; equations e1,e2,e3,e4,e5,e6,e7,e8; model m /all /; x1.l = 1; e1.. 0*x1 =e= 0; e2.. eps*x1 =e= 0; e3.. 0*x1 =e= eps; e4.. eps*x1 =e= eps; e5.. inf =g= 0; e6.. 0 =l= inf; e7.. inf =e= inf; e8.. -inf =l= inf; x1.fx=1; solve m us lp min x1;