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Evan Chen

Undergraduate math major, class of 2018.

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  • Cambridge, MA, United States
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  • mit.edu/~evanchen
  • Member for 5 years, 4 months
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  • Last seen Jul 16 at 20:17

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14 How prove this geometry inequality $R_1^4+R_2^4+R_3^4+R_4^4+R_5^4\geq {4\over 5\sin^2 108^\circ}S^2$ Apr 23 '15
9 Closed points are dense in $\operatorname{Spec} A$ Apr 24 '15
8 The last (and the weirdest) problem from Chen`s “Brief Introduction to Olympiad Inequalities” Nov 14 '15
6 Artin Reciprocity $\implies$ Cubic Reciprocity Mar 21 '16
5 If $2xy$ is a perfect square, then $x^2+y^2$ cannot be Oct 27 '15
5 Partition of plane into disjoint circumferences Jan 13 '16
4 Pointwise convergence of holomorphic functions Jul 8 '16
4 Complete+bounded homeomorphic to incomplete+unbounded Dec 25 '18
4 Problem with iterated exponentials Aug 27 '18
3 An elementary problem in Euclidean geometry Apr 26 '16
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