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Use this tag for questions relating to an optimal (best) solution which attains the best objective function value over the entire set of feasible solutions.

This tag should be used when describing or referring to the attainment of a solution which maximizes or minimizes a particular objective function for a mathematical model over the entire feasible domain. This will commonly be associated with Optimization, but other contexts may arise that warrant this tag.

The global optimality refers to the attainment of a maximum or minimum objective function value over all possible (feasible) solutions and should not be used when discussing local optimal solutions.