MJD

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20,719 reputation

433107

bio	website	blog.plover.com
	location	Philadelphia, USA
	age
visits	member for	1 year, 2 months
	seen	19 mins ago
stats	profile views	2,389

I am Mark Dominus, an amateur.

I have a blog that often carries articles about mathematics.

summary answers questions tags badges favorites 1 bounties reputation activity

501 Answers

votes activity newest

66	What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
62	In the history of mathematics, has there ever been a mistake?
50	Must a monotone function have a monotone derivative?
46	Solve $\cos^2x-\sin^2x= 1$
30	Why is $\sqrt{8}/2$ equal to $\sqrt{2}$?

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20,719 Reputation

+35	Find the first 5 terms of the expansion in a power series
+10	Manual proof that ${\left(\pi^\pi\right)}^{\pi^\pi}$ is a noninteger
+10	How can $\frac{1+1+1+\ldots}{2+2+2+\ldots} be \frac{(1+1)+(1+1)+\ldots}{2+2+2+\ldots} = 1$?
+10	Can the Complete Graph on ten vertices be edge covered by three copies of the Petersen Graph?

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40 Questions

votes activity newest

46	Why does mathematical convention deal so ineptly with multisets?
37	Why are the solutions of polynomial equations so unconstrained over the quaternions?
32	Is the notorious $n^2 + n + 41$ prime generator the last of its type?
25	Dividing a square into equal-area rectangles
20	A strangely connected subset of $\Bbb R^2$

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199 Tags

130 logic × 45	88 probability × 24
129 abstract-algebra × 33	85 real-analysis × 17
127 notation × 31	80 analysis × 8
117 elementary-set-theory × 33	79 math-history × 9
97 elementary-number-theory × 35	78 combinatorics × 28

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15 Accounts

$Mathematics Stack Exchange$	Mathematics	20,719 rep	433107
	Computer Science	423 rep	8
	Physics	376 rep	17
	Stack Overflow	261 rep	110
	Computational Science	163 rep	4

53 Badges

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Constituent × 2	Announcer × 13
Nice Question × 13	elementary-set-theory
Caucus × 2	abstract-algebra
Nice Answer × 45	Enlightened × 9
Custodian × 4	Popular Question × 2

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1 Active bounty

active offered earned

+100	Manual proof that ${\left(\pi^\pi\right)}^{\pi^\pi}$ is a noninteger

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3,306 Votes Cast

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