Hi, A product of variables is actually a nonlinear term. But if one of the factors is an integer then it is possible to transform the product of variables equivalently into a system of linear inequations. Please see http://coliop.org/download/CMPL.pdf beginning at page 43.
Cheers Mike Am 13.09.2012 um 13:19 schrieb Andrew Makhorin: > -------- Forwarded Message -------- > From: jjqcat jjqcat <[email protected]> > To: [email protected] > Subject: > Date: Thu, 13 Sep 2012 11:01:43 +0800 > > Hi, I don't know how to represent this formula: > > both p and KS are varibles, how to use multiplication for tow vars > > s.t. psiM{i in I, j in J, k in K}: ms[j,k] = p[i,k] * KS[j,k] ; > > but GLPK will report multiplication of linear forms not allowed, any > other way to express it? > > > Thanks > jjqcat > > > > > _______________________________________________ > Help-glpk mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/help-glpk _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
