Thomas Leveringhaus

Dear Gurobi-Team, I am using Concurrent Optimizer and callbacks and it seems to me, that callbacks are not called, although they should (or shouldn't?). In the reference manual (https://www.gurobi....

Dear Gurobi-Team, I tried to use MVar.fromlist() (https://www.gurobi.com/documentation/10.0/refman/py_mvar_fromlist.html) but the given example does not work: import gurobipy as gpmodel = gp.Model(...

Dear Gurobi team, I would like to ask if it makes sense (or is even possible) to place constraints back in the lazy constraint pool. I understand how they are placed in the lazy constraint pool ini...

Dear Gurobi-Team, is there any (direct) way to model general discrete variables in gurobi? What I mean are variables that take ("countable") specific integer or also specific non-integer values, e....

Dear Gurobi Team, I am trying to speed up the solution of an optimization problem and reduce the size of the problem. I am already using the "lazy" option for some inequality constraints of which I...

Dear Gurobi-Team, if I model the following problem, Gurobi can solve it with GRB.Param.NonConvex=-1, although the Q-constraint-matrix is non-convex (due to the positive and negative eigenvalues of ...

Dear Gurubi Team, if I have two variables x1 & x2 (and others) in my model and x1 and x2 have different attributes with respect to the partition heuristic. Additionally, if I have a constraint (or ...

Dear Gurobi-Team, with my questions I refer to your following webinar:https://www.gurobi.com/events/models-with-products-of-binary-variables/ Am I right, that the bilinear transformation is only ap...

Dear Gurobi-Team, I would like to submit more than one MIP start to gurobi, and if I understand everything right, this is generally possible:https://www.gurobi.com/documentation/9.1/refman/start.ht...

Hi everybody, I'd appreciate it if you'd answer my questions regarding branching priorities, the partition heuristic, their interactions and the operating principle of DistributedMIPJobs. I have tr...