Apparently, this user prefers to keep an air of mystery about them.
6 Show that the ideal of all polynomials of degree at least 5 in $\mathbb Q[x]$ is not prime Feb 10 '13
4 Perimeter of a triangle Jun 5 '12
4 Finding all groups with given property Jun 6 '12
3 Suppose $R$ is a division ring and $b$ is a nonzero element of $R$. Prove that if $bb = b$, then $b = 1_R$ Feb 20 '13