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tkf
  • Member for 6 months
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5
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33
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Top posts
question
27
Leaders and Rulers
Jun 5
question
9
For which numbers of animals, can positions of wheel match exactly one head and body at a time
Nov 8
question
9
Stopping the bank robbers
Nov 19
question
9
Communicate square on a 3-by-3 grid by flipping precisely one of 13 coins
May 29
answer
3
Can you divide 1000 into two parts such that one part is a multiple of 47 and the other is a multiple of 19?
Nov 18
question
3
Decode missing scientist's last message
Nov 13
Top network posts
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36
Are all finite-dimensional algebras of a fixed dimension over a field isomorphic to one another?
16
$6!\cdot 7!=10!$. Is there a natural bijection between $S_6\times S_7$ and $S_{10}$?
14
Wrong but fun and/or useful "proofs" in linear algebra
14
Algebraic theorems with no known algebraic proofs
11
List of "almost"-categories