Apparently, this user prefers to keep an air of mystery about them.
2 Let $G=(V=X \cup Y,E)$ be a bipartite graph.Show that G has a matching which matches every vertex of X. Jan 22 '13
2 Find the general solution of the PDE Jan 24 '13
1 ode/pde: Show that two functions f(x) and g(x) are linearly dependent on some open interval I Jan 17 '13
1 An ode system with initial condition Jan 17 '13