HELLO !

GAMS
1

Hi all

I need to import these equations in my problem

if u(i,j)=0 then x(i,j)=x(i,j-1)+1 & y(i,j)=0

else y(i,j)=y(i,j-1)+1 & x(i,j)=0

which u is a binary variable and x,y are integer.

please help me !

Best regards.

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2

Erwin Kalvelagen to me

This is easily modeled with Cplex indicator constraints, otherwise a
big-M formulation is not too difficult.

http://yetanothermathprogrammingconsultant.blogspot.com/2009/05/logical-conditions.html

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Erwin Kalvelagen
Amsterdam Optimization Modeling Group
erwin.kalvelagen@gmail.com
http://amsterdamoptimization.com
…
Ali Akbar Rashidi to Erwin

Thank you very much MR.Kalvelagen for your helps
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