... some other data to promote the idea that Gerhard Paseman did not post using the MathOverflow handle Ragman rephrased.
Information visible only to moderators suggests Ragman rephrased and Gerhard Paseman are not the same user.
... once a question is closed it is not possible to post an answer - that's basically what closing a question means
Yes. As I see it, there are basically two reasons to close a question:
In each of these cases, I think it makes sense to suspend voting on the question. However, I can think of one reason to allow voting on closed questions: it makes it so that having your question closed doesn't sting as badly. In situation 2, I think it's really important to encourage the OP to clarify so that the question can be reopened. I like to see comments of the form, "I think there's a good question here, but which of the following things are you trying to solve?" or "I've edited the question with my best guess of what you meant. Did I get it right?"
Upvoting a closed question is some small way to keep the OP from being disheartened. Comments or meta posts of the form above (which more actively solve the problem) are much better.
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