I am an algebraic topologist, based at the University of Sheffield.
6 general formula for volume of a simplex? jan 25 '15
3 How does one prove that if $\cos(t) = \cos(t')$ and $\sin(t) = \sin(t')$ then $t = t' + 2k\pi$? jan 26 '15
1 Combinatorics, surjective functions with conditions jan 28 '15