Qiaochu Yuan

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77,135 reputation

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bio	website	qchu.wordpress.com
	location	Boston, MA
	age	21
visits	member for	1 year, 9 months
	seen	2 hours ago
stats	profile views	21,346

In the fall I will begin graduate study in pure mathematics at the University of Berkeley. In the meantime, you can contact me at qiaochu.yuan[at]gmail.com.

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1,207 Answers

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196	Mathematical difference between white and black notes in a piano
81	Is it possible to represent every huge number in abbreviated form?
62	Proof that $\exp(x)$ is the only function for which $f(x) = f'(x)$
62	Is infinity a number?
56	Given an infinite number of monkeys and an infinite amount of time, would one of them write Hamlet?

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77,135 Reputation

+5	What structure does the alternating group preserve?
+5	What is the spectral theorem for compact self-adjoint operators on a Hilbert space actually for?
+5	Quadratic reciprocity via generalized Fibonacci numbers?
+5	Intuition for the definition of the Gamma function?

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39 Questions

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47	Intuition for the definition of the Gamma function?
40	Quadratic reciprocity via generalized Fibonacci numbers?
30	What's the point of studying topological (as opposed to smooth, PL, or PDiff) manifolds?
26	What structure does the alternating group preserve?
24	What is the spectral theorem for compact self-adjoint operators on a Hilbert space actually for?

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287 Tags

832 abstract-algebra × 148	414 group-theory × 71
576 linear-algebra × 127	372 soft-question × 62
561 calculus × 64	355 general-topology × 56
546 number-theory × 92	331 sequences-and-series × 50
434 combinatorics × 73	307 geometry × 33

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$Mathematics$	Mathematics♦	77,135 rep	3159331
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	Gaming	287 rep	18
	Stack Overflow	248 rep	37
$TeX - LaTeX$	TeX - LaTeX	207 rep	17

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Nice Answer × 247	logic
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