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12:23 AM
1
Q: How to model the constraints of min and max in cvxpy

zdmI have a continuous variable $x_{ij}\in[0,1]$ and I need to write the following constraint: $$M_i-m_i+1\leq C_i$$ where $M_i=\max\{j: x_{ij}>0\}$ and $m_i=\min\{j: x_{ij}>0\}$

 
1:08 AM
2
Q: Branch & bound: why does the lower bound increase?

NormalFitFor a minimization problem, when running a branch & bound algorithm, I understand that: Every integer feasible solution provides an upper bound on the optimal objective value of the original problem. The lower bound for each branch-and-bound node arises from solving the linear programming relaxa...

 

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