Apparently, this user prefers to keep an air of mystery about them.
3 If a graph has no isolated or pendant vertices then it contains at least one simple circuit Jan 6 '13
2 Prove that if there exists two distinct paths from u to v,There exists a simple circuit Dec 26 '12
1 How to determine which of the elements of a monoid are invertible and the inverses of these elements Dec 29 '12
1 Suppose that a set has an odd number of elements. Explain why half of the subsets will have an odd number of elements Dec 30 '12
0 Prove that there exists some positive integer $X_m=X_0$ given that a function is injective Jan 7 '13
-2 Proving equivalence,partial order on a binary relation Dec 30 '12