[Help-glpk] Set cardinality

[Juan Pablo Caballero Villalobos]

1. does MathProg have a set function like "card",  that will give me the number 
of elements in a set? 

2. what´s "eps" meaning in "Marginal" column? 

Problem:    tarea1f1
Rows:       4
Columns:    10
Non-zeros:  24
Status:     OPTIMAL
Objective:  FObjetivo = 0.6666666667 (MINimum)

   No.   Row name   St   Activity     Lower bound   Upper bound    Marginal
------ ------------ -- ------------- ------------- ------------- -------------
     1 FObjetivo    B       0.666667                             
     2 Combinaciones[OPEX]
                    NS             0             0             =         < eps
     3 Combinaciones[CAPEX]
                    NS             0             0             =      0.666667
     4 Salida       NS            -1            -1             =     -0.666667

   No. Column name  St   Activity     Lower bound   Upper bound    Marginal
------ ------------ -- ------------- ------------- ------------- -------------
     1 lambda[TO1]  NL             0             0                     1.33333
     2 lambda[TO2]  NL             0             0                    0.666667
     3 lambda[TO3]  B              1             0               
     4 lambda[TO4]  NL             0             0                    0.333333
     5 lambda[TO5]  NL             0             0                    0.333333
     6 lambda[TO6]  NL             0             0                       < eps

  


thank you, in advance.


Juan Pablo Caballero