Mathematics
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Joel Cohen

I'm a young researcher in Mathematics. My current research revolves around Number Theory, Harmonic Analysis on p-adic groups, Automorphic Forms and the Langlands Program.

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44 Is there an equation to describe regular polygons? May 29 '11
36 Continuity of the roots of a polynomial in terms of its coefficients Sep 9 '11
36 Is a Sudoku a Cayley table for a group? Aug 27 '16
21 Can we differentiate Fermat's little theorem? Nov 10 '19
16 Determine the number of functions $f: \mathbb{Z}_{p^n} \to \mathbb{Z}_{p^n}$ Aug 12 '11
16 How to prove those “curious identities”? Oct 6 '11
15 Does $f(z+2\pi)=f(z)$ for all $z\in \mathbb{C}$? May 25 '12
15 nth powers modulo all primes May 6 '11
14 Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$? Jul 3 '11
13 Show that $\mathbb{Z}_{2} \times \mathbb{Z}_{4}$ is not a cyclic group Nov 3 '13
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