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pisoir
  • Member for 8 years, 4 months
  • Last seen more than a month ago
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19
Plus sign in the middle of a ring
17
"Polynomials" with non-integer exponents
13
Prime numbers of the form $1+p+p^2+\dots+p^n$
9
What is a fewnomial?
8
trace of product of a diagonal and a matrix

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