Yuriy S
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Mathematics 30,261 rep 5 gold badges45 silver badges160 bronze badges
Worldbuilding 1,367 rep 1 gold badge8 silver badges16 bronze badges
Puzzling 987 rep 5 silver badges17 bronze badges
Science Fiction & Fantasy 757 rep 4 silver badges16 bronze badges
Mathematica 665 rep 3 silver badges16 bronze badges

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