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David Moews earned this badge 5 times |
feb 23 at 7:55
Does every sequence of rationals, whose sum is irrational, have a subsequence whose sum is rational
jan 21 at 0:05
Is this sequence unbounded?
feb 4 '12 at 18:12
Showing $\prod\limits_{i<j} \frac{x_i-x_j}{i-j}$ is an integer
