David Speyer

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18,704 reputation

14794

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visits	member for	2 years, 10 months
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Associate professor of math at UMich, very active on Mathoverflow.

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313 Answers

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49	Is it morally right and pedagogically right to google answers to homework?
40	Advantages of IMO students in Mathematical Research
38	Convergence of $\sqrt{n}x_{n}$ where $x_{n+1} = \sin(x_{n})$
31	Convergence of $\sum \limits_{n=1}^{\infty}\sin(n^k)/n$
24	Sums of roots of unity

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18,704 Reputation

+5	Can extending a finite ground field make modules isomorphic?
+25	Truncated exponential map from $\mathfrak{gl}_n$ to $GL_n$
+10	Why does this class group seem inconsistent?
+10	Given real numbers: define integers?

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6 Questions

votes activity newest

15	Can extending a finite ground field make modules isomorphic?
14	How to compute rational or integer points on elliptic curves
13	Writing a group element as $ghg^{-1} h^{-1}$ and as $g^2 h^2$
12	If a finite group $G$ is solvable, is $[G,G]$ nilpotent?
7	Covering a group with the conjugates of two subgroups related by an automorphism

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191 Tags

230 number-theory × 33	92 group-theory × 23
162 algebraic-geometry × 40	89 calculus × 13
110 algebraic-number-theory × 16	70 diophantine-equations × 10
101 sequences-and-series × 12	70 analysis × 7
100 abstract-algebra × 27	69 linear-algebra × 22

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12 Accounts

$Mathematics Stack Exchange$	Mathematics	18,704 rep	14794
	Mathematica	807 rep	513
	Meta Stack Overflow	396 rep	27
	Theoretical Computer Science	163 rep	5
	Area 51	156 rep	1

37 Badges

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Nice Answer × 56	Necromancer × 9
Revival × 9	Enlightened × 22
Nice Question × 4	Custodian × 2
Caucus × 3	Informed
abstract-algebra	Scholar

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3,743 Votes Cast

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3,721	up		874	question		61		18
22	down		2,869	answer		61		18

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