JuMP constraint: how to use more than one filter elements in the sets

Specific Domains Optimization (Mathematical)
1

Hi,
In JuMP, I need to implement a constraint that uses more than one filter elements in the sets.
It seems that JuMP accepts only one filter. The error message is:“There can be at most one filtering condition, which is separated from the indices by a single ;.”

The constraint expression I am trying to implement is:

If j<=1 and Mdummy[i,j]=1 than T[j] <= T[i]:

Mdummy is a parameter

@constraint(model1, con[i in Vst_total, j in Vst_total; Mdummy[i,j]==1, j<=i], T[j]<= T[i])

Does anybody knows how to solve it?
Thanks in advanced!

2

Use a boolean operator:

@constraint(model1, con[i in Vst_total, j in Vst_total; Mdummy[i,j]==1 && j<=i], T[j]<= T[I])
#                                                                      ^^
3

@odow Thank you for your reply. It works well.

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