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Mathematics
Joffan's user avatar
Joffan's user avatar
Joffan's user avatar
Joffan
  • Member for 9 years, 11 months
  • Last seen more than 1 year ago
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40,067
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3
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About

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

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5
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2
Posts
20
Posts %
5
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1
Posts
10
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4
Score
2
Posts
20
Posts %
4
Score
1
Posts
10
Posts %
2
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1
Posts
10
Posts %
2
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10
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Top posts
question
24
Advise new users to stay engaged with their question
Apr 8, 2021
question
13
Comments soliciting downvotes
Feb 5, 2015
answer
5
When someone gives you -2 points
Oct 21, 2017
answer
4
Underline does not display in fraction. Mathjax bug?
Jan 8, 2017
answer
2
Why should someone receive reputation if someone else edits their terrible question into a good one?
Jul 25, 2016
question
2
Vote to "Leave Open" from question screen
Feb 26, 2017
answer
1
The [contradiction] tag
Apr 16, 2015
answer
1
What to do with two old questions that are clear duplicates but not marked so?
Feb 20, 2017
answer
0
MathJax v2.5 beta released
Jan 21, 2015
answer
-7
Too quick to close
Mar 19, 2015
Top network posts
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81
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
Every point of a grid is colored in blue, red or green. How to prove there is a monochromatic rectangle?
53
Where does the constant increase by 2 of differences between integer square values come from?
50
Is there a combinatorial interpretation of the triangular numbers?