I've noticed three potentially duplicate questions about creating a left-linear grammar today, one on MSE, two on here. MSE was the first to be asked, here, then this nearly identical question was asked on CS.SE, followed up by this question about constructing an automaton for the problem. All three questions were asked by unregistered users; I don't know if they're actually identical. How should these questions be handled?
ETA: A fourth question just showed up.
When the same user asks the same question multiple times, we normally merge them (or just close unanswered copies as duplicates). When the question is asked on different sites, we normally close with a comment or migrate then merge.
But here, these are different users, and the questions are not exactly the same. Evidently these are all about the same homework assignment, but asked by different students who are struggling with different aspects of the assignments.
So I don't think there's anything special to do. These are independent questions on related topics. If there were questions about the same topic, even worded differently, then they should be closed as duplicates; but here the questions are sufficiently distinct that they aren't exact duplicates.
