# The most active fields of mathematics?

Which fields of mathematics are the most active at this time -- by number of papers published, grant money, people working in them or by any other measure? Any trends in this regard?

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@Closevoter: This is not an opinion-based question--the OP gave objective metrics in his question. It could be considered too broad, but I think the benefit of knowing the answer pushes this question into the realm of "on-topic-ness" :) –  anorton Dec 30 '13 at 19:09
Is the math-history tag appropriate here? It's very recent history, but time-dependant and thus history nonetheless :) –  Shaun Dec 30 '13 at 19:20
I've found this on MO chat. See if it's of any use. –  Pristine Kavalostka Dec 30 '13 at 19:24
For the record, I voted to close because the question itself has assumptions that are highly opinion-based (active=number of papers or grant money) so that it is impossible to answer the question appropriately without a prior discussion. –  Phira Dec 30 '13 at 20:30
@DanChristensen So you are saying that the definition is not arbitrary because an AMS article is using it? –  Phira Dec 30 '13 at 21:13