— Chance and probability play a natural role in statistical physics. Inspired by confetti, researchers at the University of Gothenburg, ... 
Algebra
A7: Let and be positive real numbers satisfying and Prove that
A5: Prove that for every positive integer the set can be partitioned into triples in such a way that ... 
The results are in for the 2012 United States of America Mathematical Olympiad (USAMO). This year, 273 outstanding high school ... 
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I look forward to the next! Thx for share