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Yunhan

University of Chicago 2024' prospective mathematics major.

Currently self-studying Algebra with Paolo Aluffi's Algebra: Chapter 0 and Analysis following baby Rudin.

Outside mathematics, I am interested in classical music, especially piano.

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  • Maastricht, 荷兰
  • Member for 2 years, 6 months
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  • Last seen Oct 2 '20 at 13:20

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4 Why can't sphere be the quotient space of $\Bbb R^2/\Bbb Z^2$? Jan 27 '20
2 Problems regarding the ratio of two definite integrals Aug 2 '20
1 Proving $S_3$ is not a coproduct of cyclic groups Dec 16 '19
1 Proving Neilsen-Schreier Theorem using “only free groups act freely on a tree” Feb 3 '20
1 Question regarding Rudin's proof that for $Y \subset X$, $E \subset Y$ is open relative to $Y$ iff $E = Y \cap G$ for some open $G \subset X$ Aug 18 '18
0 Conversion of this recursive formula to a general term of a sequence Oct 26 '18
0 Converse statements regarding separable metric space Feb 29 '20
0 Proving that the free group on two generators is the coproduct $\mathbb{Z}*\mathbb{Z}$ in $\textbf{Grp}$ Nov 29 '19

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