comparing elements of set

GAMS
1

Hello,

I have one set in my model :

i {5,6}
alias{i,j}

I would like to create a variable y which is

y 5 6

5 y_{55} y_{56}

6 y_{65} y_{66}

But I only need to make a reference to y_{56}. How do I compare the elements of the set { 5, 6 }? It would be an restriction y$ord(i) lt ord(j) ? This is not working for me. Anybody has another suggestion?

Thank you.

Brígida

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2

Y(‘5’,’6’)



regards



From: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] On Behalf Of Brígida Sartini
Sent: miércoles, 23 de marzo de 2011 05:15 p.m.
To: gamsworld@googlegroups.com
Subject: comparing elements of set



Hello,

I have one set in my model :

i {5,6}
alias{i,j}

I would like to create a variable y which is

y 5 6

5 y_{55} y_{56}

6 y_{65} y_{66}

But I only need to make a reference to y_{56}. How do I compare the elements of the set { 5, 6 }? It would be an restriction y$ord(i) lt ord(j) ? This is not working for me. Anybody has another suggestion?

Thank you.

Brígida

–
To post to this group, send email to gamsworld@googlegroups.com.
To unsubscribe from this group, send email to gamsworld+unsubscribe@googlegroups.com.
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–
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