hello everyone,

I have an equation :

calc(k)…

cs( i,k) =e= cd(j,k) + mass/d(j) ;

what I want to do is to have the equation but always i shoud be eqal to j.for example :

cs(‘1’,k) =e= cd(‘1’, k ) + massload/d( ‘1’ ) " i=j=1 "

after that the equations will be "i=j=2 " , " i=j=3 " …

## how can I write the equation so that it choose similar i and j?

thank you all in advance

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Hi Mohamad:

Are i and j different sets (and you want to write the cs equation only for when i and j have the same value ) ?

Regards,

Claudio

On Fri, May 10, 2013 at 6:09 AM, Mohamad Dehghani wrote:

hello everyone,

I have an equation :

calc(k)…

cs( i,k) =e= cd(j,k) + mass/d(j) ;

what I want to do is to have the equation but always i shoud be eqal to j.for example :

cs(‘1’,k) =e= cd(‘1’, k ) + massload/d( ‘1’ ) " i=j=1 "

after that the equations will be "i=j=2 " , " i=j=3 " …

## how can I write the equation so that it choose similar i and j?

thank you all in advance

\

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Hi mohammad

u should this const. similar below:

calc(i,j,k)$(ord(i)=ord(j))… cs( i,k) =e= cd(j,k) + mass/d(j) ;

On Friday, May 10, 2013 1:39:14 PM UTC+4:30, Mohamad Dehghani wrote:

hello everyone,

I have an equation :

calc(k)…

cs( i,k) =e= cd(j,k) + mass/d(j) ;

what I want to do is to have the equation but always i shoud be eqal to j.for example :

cs(‘1’,k) =e= cd(‘1’, k ) + massload/d( ‘1’ ) " i=j=1 "

after that the equations will be "i=j=2 " , " i=j=3 " …

## how can I write the equation so that it choose similar i and j?

thank you all in advance

\

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