Hello all,

in the equations definition, I would like to put a strict unequality

constraint on my endogeneous variable x(t) :

x(t) > x(t-1)

means the variable’s value in each period t must be strictly greater

than in the previous period t-1.

But in the equations definiions, gams only considers unequality

operators like =g= and =l= (greater or equal to, less or equal to).

Strict operators are not accepted.

Do you know if the strict unequality operators exist in gams?

Many thanks

Romain

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Hi, I think that in GAMS there isn’t strict unequality operators, but you can define a parameter epsilon (>0) and then use the unestrict unequality operator, like this

eq(t)… x(t) =g= x(t+1) + epsilon

hope this helps

kind regards

2009/7/19 romain.davoust

Hello all,

in the equations definition, I would like to put a strict unequality

constraint on my endogeneous variable x(t) :

x(t) > x(t-1)

means the variable’s value in each period t must be strictly greater

than in the previous period t-1.

But in the equations definiions, gams only considers unequality

operators like =g= and =l= (greater or equal to, less or equal to).

Strict operators are not accepted.

Do you know if the strict unequality operators exist in gams?

Many thanks

## Romain

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Daniel AndrÃ©s Navia LÃ³pez

Ingeniero Civil QuÃmico

Mg.Sc.Ciencias de la IngenierÃa, MenciÃ³n IngenierÃa QuÃmica

626752875

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