Simon Nickerson

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1,163 reputation

621

bio	website	nickerson.org.uk/blog
	location	United Kingdom
	age	31
visits	member for	1 year, 10 months
	seen	yesterday
stats	profile views	186

I did a PhD in computational group theory at Birmingham (UK), finishing in 2005, where I calculated explicit representations of finite simple groups over Z and extensions of Q. Since then I have been gradually forgetting all the maths I learned.

I am currently software developer based in London, UK.

	1,163 reputation	bio	website	nickerson.org.uk/blog	visits	member for	1 year, 10 months
621 badges		location	United Kingdom		seen	yesterday

summary answers questions tags badges favorites bounties reputation activity

7 Answers

votes activity newest

19	Division by imaginary number
16	A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language
14	Are there any functions that are (always) continuous yet not differentiable? Or vice-versa?
10	How come 32.5 = 31.5?
9	Construct a bijection from R to R-S, where S is countable

1,163 Reputation

+15	How can you prove that a function has no closed form integral?
+15	How do you prove that a group specified by a presentation is infinite?
+5	Number of finite simple groups of given order is at most 2 - is a classification-free proof possible?
+10	Division by imaginary number

5 Questions

votes activity newest

34	How can you prove that a function has no closed form integral?
17	How do you prove that a group specified by a presentation is infinite?
16	Algorithm for calculating $A^n$ with as few multiplications as possible
15	Is there a real number lookup algorithm or service?
10	Number of finite simple groups of given order is at most 2 - is a classification-free proof possible?

21 Tags

19 algebra-precalculus	0 soft-question × 3
14 real-analysis × 2	0 big-list × 2
10 recreational-mathematics	0 group-theory × 2
10 geometry	0 math-software
9 elementary-set-theory	0 philosophy