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36 votes

Jokes in the sense of Littlewood: examples?

24 votes

What are some interesting corollaries of the classification of finite simple groups?

19 votes

Why should one still teach Riemann integration?

18 votes

Never appeared forthcoming papers

12 votes

Mathematical "urban legends"

9 votes

What are some correct results discovered with incorrect (or no) proofs?

9 votes

Is there a universal countable group? (a countable group containing every countable group as a subgroup)

9 votes

What are the normal subgroups of a direct product?

6 votes
Accepted

"Radon-Nikodym theorem" for nonabsolute continuous measures

5 votes
Accepted

Reference request: given a divisor d of N, how quickly can I obtain the largest factor of N coprime to d?

5 votes

Is P=NP relevant to finding proofs of everyday mathematical propositions?

4 votes

Can we unify addition and multiplication into one binary operation? To what extent can we find universal binary operations?

2 votes

Fastest way to factor integers < 2^60

2 votes

Does an "efficient" random number generator exist?

2 votes

Regular borel measures on metric spaces

1 vote

Can we ascertain that there exist an epimorphism $G\rightarrow H?$

0 votes

The Riemann correspondence for riemann surfaces made explicit and its generalizations