Apparently, this user prefers to keep an air of mystery about them.
2 If $a \gt 1$ and if $a$ has the property that whenever $a|bc$ then $a|b$ or $a|c$… Why must $a$ be a prime? Dec 7 '12
2 Suppose that we have $a=p_1 \cdot p_2\cdot p_3=q_1\cdot q_2\cdots q_s$ where $p_1,p_2,p_3$ and $q_1,q_2,…,q_s$ are primes. Explain why $s=3$. Dec 10 '12
2 Using formula of sum of two squares … create Pythagorean triplets from pairs of primitive Pythagorean triplets? Dec 10 '12
1 Finding the standard deviation of a set of angles. Feb 21 '13