Shahrzad Valizadeh

i have the following lists list1: [(1, [43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 7, 2, 2, 5, 0, 0, 0, 7, 6, 0, 3, 2, 4, 4, 0, 0, 0, 0, ...

I have the following constraint in my model:   Through using the column generation, I'm going to add a new variable to the model. Definitely the coefficient corresponding to the new variable would...

i have the following variable of: b = {}    for m in M:        for demand_index in range(100):            for t in range(tt):                b1["O+", "1", m, demand_index, t] = model.addVar(vtype=G...

I have the following constraint:            model.addConstr(aux1["O+", "1", m, t] == demand - sum(i1["O+", "1", m, t] for m in range(1, m)))            model.addConstr(aux2["O+", "1", m, t] == gp.m...

I have the following information: My question is whether the following code represent the attached constraint:    state_OPM_term = gp.LinExpr()   state_OPM_term = gp.quicksum((b1["O+", "1", m, t] ...

I want to solve the following model using Two-Phase method.  minz = -x1 + 2x2 - 3x3 x1 + x2 + x3 = 6 -x1 + x2 +2x3 = 4 2x2 + 3x3 = 10 x3 <= 2 i have written the following code, but it gives me infe...

If I want to run my model over few weeks, and for all days of the week as: days of week = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]for week in range(2):for day ...

I have defined days of week at the start of my code as: days_of_week = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"] I also have set of: constraint_days_Loc = ["Tue...

I have defined days of week at the start of my code as: days_of_week = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"] I also have set of: constraint_days_Loc = ["Tue...

I have a vector of 100 demand values, for each of them i want to define specific constraints. Here is how I've defined my variables.         b1 = {}        for r in blood_types:            for m in...