loop question

[Tonghui Zhang]

I have aquestion with a constrains

y[i,j+1]<=y[i,j]

But I don't know how to write it in ampl. anyone can help?

[Robert Fourer]

You can write y[i,j+1] <= y[i,j] in an AMPL constraint, if j takes numbers as values. To get more help, try posting your entire constraint (beginning with "subject to ...") and also the AMPL definitions of the sets, parameters, and variables involved in the constraint.

Bob Fourer
am...@googlegroups.com

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