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Mathematics
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czech-spanier
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Phi beta kappa $'89 $ UC Berkeley

It's alright to work at Subway. -Yitang Zhang

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13
A question on Euler's totient function
10
Is $\ \{ \sin(p):\ p\ $ is prime $ \}\ $ a dense subset of $\ [-1,1]\ ?$
8
Find an average number by using group action
7
Is there a perfect group in which not every element is a commutator?
6
Can two non-isomorphic finitely presented groups have isomorphic abelianizations?