Originally posted by: xinzhangandy

I am studying to use cplex to solve vrp problem,but I failed to express the constraint about elimanating the subtour,I hope somebody can help me with the expression,thank you.

V0 is the set of customers;k is the set of vehicles;S is all the subset of V0,x_ijk indicates whether the vehicle k arrives directly from point j to point j.Thanks again

Hi

you could have a look at

https://www.ibm.com/support/knowledgecenter/en/SSSA5P_12.5.1/ilog.odms.ide.help/examples/html/opl/models/TravelingSalesmanProblem/tsp.mod.html

regards

Originally posted by: xinzhangandy

Thank you,It is so kind of you to give me advice,I will learn it later.

best wishes!