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Tom Boardman's user avatar
Tom Boardman's user avatar
Tom Boardman's user avatar
Tom Boardman
  • Member for 13 years, 9 months
  • Last seen more than 7 years ago
  • London, United Kingdom
101 votes
23 answers
11k views

What are Your Favourite Maths Puzzles?

34 votes
3 answers
5k views

Why does area differentiate to perimeter for circles and not for squares?

21 votes
3 answers
8k views

Infinite Series: Fibonacci/ $2^n$ [duplicate]

16 votes
5 answers
2k views

An example of a scheme in the language of schemes

14 votes
4 answers
31k views

How to justify small angle approximation for cosine

13 votes
5 answers
3k views

Visualising $\mathbb CP^2$: a problem of attaching cells with a dimension gap >1

11 votes
1 answer
2k views

Canonical example of a cosheaf

7 votes
2 answers
441 views

"Completeness modulo Godel sentences"?

7 votes
1 answer
281 views

More convergent series

7 votes
2 answers
732 views

A curious compactness confusion: space filling curves in the hilbert cube that contradict a bona fide theorem?

7 votes
3 answers
539 views

Does this class of cipher have a name? What weaknesses does it have?

6 votes
8 answers
36k views

Deal or no deal: does one switch (to avoid a goat)?/ Should deal or no deal be 10 minutes shorter?

6 votes
2 answers
402 views

Exercise from Leinster's Informal introduction to topos theory

5 votes
2 answers
482 views

Generating seating plans- maximal number of orderings with different adjacencies

5 votes
2 answers
514 views

Is this the right categorical generalisation of dual space

3 votes
0 answers
364 views

Combining confidence intervals for sums of generic random variables

2 votes
1 answer
208 views

When and why does the Lindenbaum extension construction fail for second order theories?