Apologies for replying to myself twice, but a bit of experimenting has shown me
a partial explanation for the mystery I raised in the quoted text below. As
well as the fact that the MIP software used by the authors of the paper linked
below might have been specifically written for transport
I've got a question about LP initial basis.
I create a problem, then optimize it, and save status for variables and
constraints, and delete the problem.
I create a new problem, early the same as the first one : I only remove
some variables (and so modify/remove some constraints).
Is there a
