Worldbuilding
Joffan's user avatar
Joffan's user avatar
Joffan's user avatar
Joffan
  • Member for 7 years, 3 months
  • Last seen more than 1 year ago
Profile Activity
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361
reputation
20k
reached
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answers
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About

Interested in mathematical counting puzzles and many others ${\overset\infty \smile}$

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Top tags
26
Score
3
Posts
100
Posts %
2
Score
1
Posts
33
Posts %
2
Score
1
Posts
33
Posts %
1
Score
1
Posts
33
Posts %
1
Score
1
Posts
33
Posts %
Top posts
All Questions Answers
Score Newest
answer
23
How to build a trap to last the ages?
Apr 10, 2018
answer
2
Is there an upward limit to the size of spacecraft with "Centrifugal" gravity?
Jul 5, 2016
answer
1
A weapon(preferably hard scifi) that will limit velocity of space ships in a wide region temporarily
Apr 18, 2017
Top network posts
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79
Prove that the equation $x^2-y^2 = 2002$ has no integer solution
55
How many subsets of set $\{1,2,\ldots,10\}$ contain at least one odd integer?
53
Where does the constant increase by 2 of differences between integer square values come from?
51
Every point of a grid is colored in blue, red or green. How to prove there is a monochromatic rectangle?
50
Is there a combinatorial interpretation of the triangular numbers?

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