Apparently, this user prefers to keep an air of mystery about them.
4 Example of function satisfying for fixed $t\in (0,1)$ inequality $f(tx+(1-t)y) \leq tf(x)+(1-t)f(y)$ Jan 13 '12
4 Connection between some inequalities Jan 21 '12
3 Easy question about convergence in mean Jan 18 '12
0 What are eigenvalues of such an operator? Jan 19 '12