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I came across with the following question

Definition of "descends to"

I think that is a question that many students of algebraic geometry (and probably many others) have in the beginning, and I don't know any formal reference for the question. Although the accepted answer gives an idea of what it means to say that a map descents to another, I don't think this is enough, I would like to see a formal definition or a reference.

Because of this, I would like to know if I can start a bounty on this question.

Thanks in advance.

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    $\begingroup$ I guess you can also see the "start a bounty" buttom in that post. In general you see that in a post, then yes. $\endgroup$ – Arctic Char Jun 26 at 15:20
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    $\begingroup$ Yeah, maybe my question was not clear. It should be, is it acceptable to start a bounty on a question that already has an answer? $\endgroup$ – User43029 Jun 26 at 16:51
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Yes.

For example, you might think that the existing answers, whether one has been accepted or not, don't fully address the question (sometimes a reader has a different opinion about what constitutes a "fully satisfying answer" than the original poster of the question). Another thing you can do is use a bounty to award an existing answer you think is really awesome (so in a sense you can upvote a question multiple times :P).

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