A Pseudopolynomial Algorithm to Minimize Maximum Lateness on Multiple Related Machines

In this paper, we will find a pseudopolynomial algorithm to solve $Qm \mid \mid L_{\max}$ and then we will prove that it is impossible to get any constant-factor approximation in polynomial time, and thus also impossible to have a PTAS for this problem. We will also show that the the problem when we don't assume a fixed number of machines, $P \mid \mid L_{\max}$, is strongly NP-hard.

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