Search found 4 matches

by Fady
6 years ago
Forum: Modeling
Topic: New to GAMS to create simple LP program
Replies: 2
Views: 3603

Re: New to GAMS to create simple LP program

Dear Sir,

Thanks a lot for your reply. I've succesfully overcome the problem by using MINLP solver. thanks so much for your advice.

Kind regards,
fady
by Fady
6 years ago
Forum: Modeling
Topic: equations in MIP model
Replies: 2
Views: 3269

Re: equations in MIP model

Hi cladelpino,

using the MINLP solver solved the problem. Thanks a lot for your help.

Kind Regards,
Fady
by Fady
6 years ago
Forum: Modeling
Topic: equations in MIP model
Replies: 2
Views: 3269

equations in MIP model

Dear all,

I am trying a model using binary variables, the constraint equations contain a product of two variables as:
(1- x)*(1-y) =e= 0;
but i get error "Endogenous operands for * not allowed in linear models"
is there any way to solve this or another way rewrite the equation?
thanks
by Fady
6 years ago
Forum: Modeling
Topic: New to GAMS to create simple LP program
Replies: 2
Views: 3603

New to GAMS to create simple LP program

Hi all, I'm new to LP and GAMS software. I intend to create a simple linear program the objective function is to minimize the summation of b(i) where b(i) is binary variables (values either 0 or 1) and i is a set from (1 to 57) the constaints are that each b(i) should satisify the following equation...