Top network posts

• 35 Does every sequence of rationals, whose sum is irrational, have a subsequence whose sum is rational
• 26 Is it true that any matrix can be decomposed into product of rotation,reflection,shear,scaling and projection matrices?
• 23 Expected rank of a random binary matrix?
• 23 How can I calculate $\sin\left(10^{10^{100}} - 10\right)^\circ$?
• 22 Showing $\prod\limits_{i<j} \frac{x_i-x_j}{i-j}$ is an integer
• 21 Was the "Earthrise" witnessed by Apollo 8 the first available "full" photo of the Earth?
• 20 Is this sequence unbounded?
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