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a)
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Write
in a GAMS input file (extension gms) the sets,
scalars, parameters, variables, equations and
constraints, and any other component necessary
for the problem as if you were writing a mathematical
problem. You must be familiar with the GAMS
notation to do so. You must even declare and
define in this section the equations and constraints
for the disjunction terms. You must declare
and define binary variables to handle disjunction
terms, these variables will work as Boolean
variables. Make sure to write at least a dummy
equation that uses them in order to avoid the
GAMS compiler take out from the model if they
are not used in other equation/constraint of
the model.
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b)
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Write in the same GAMS input file the sentences:
$ontext
begin LOGMIP
$offtext
end LOGMIP
the
dollar sign must be in the 1st column. Between
these two sentences you must include the disjunction
declaration and definitions. The complete section
including the sentences above are treated as
a comment by the GAMS compiler, so it is ignored
by it. The LogMIP compiler compiles this section.
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