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Samuel earned this badge 5 times
may 3 at 5:27
Can a series be empty?
mar 26 at 13:55
Analog of $(a+b)^2 \leq 2(a^2 + b^2)$
jan 12 at 17:59
polynomial with rational coefficient have$ -\sqrt{2}$ as it minimal value?
mar 5 '12 at 4:20
Math without infinity
aug 7 '10 at 17:37
More convergent series

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