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
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
1 Find the general solution of the PDE jan 24 '13
0 Bipartite Graph: Show that if $\deg(V_0)=3$, then we may $\Delta +1$ edge colour such a graph $G$. feb 10 '13
0 Explain the Halls Condition feb 11 '13