Jef
  • Member for 4 years, 6 months
  • Last seen more than a month ago
  • UK
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Mathematics 3,536 rep 9 silver badges18 bronze badges
MathOverflow 1,117 rep 6 silver badges14 bronze badges
Area 51 151 rep 2 bronze badges
Biology 101 rep 2 bronze badges
Cross Validated 101 rep 1 bronze badge

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