Posted by mathematicalcircles on Wednesday, March 25, 2015
Wednesday, 25 March 2015
John F. Nash Jr. (left) and Louis Nirenberg (right) are named 2015 Abel Prize
Friday, 20 March 2015
Wednesday, 18 March 2015
Monday, 16 March 2015
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Define \(f: \mathbb{R} \rightarrow \mathbb{R}\) by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, ...
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16 programers are playing in a single elimination tournament. Each player has a diff erent skill level and when two play against each othe...
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Show that if x, y, z are positive integers, then ( xy + 1)( yz + 1)( zx + 1) is a perfect square if and only if xy + 1, yz + 1, zx ...