A Constructive Approach to Graph Theory Notes on a semiotic approach to constructing isomorphism invariants of graphs by John-Tagore Tevet. http://www.hot.ee/tewet/
Four Colour Theorem A new proof of the four color theorem by Ashay Dharwadker that uses group theory and Steiner systems. http://www.geocities.com/dharwadker/
Hamiltonian Circuit Algorithm A new algorithm for finding Hamiltonian circuits with a constructive proof of Dirac's theorem and applications to finding Knight's Tours by Ashay Dharwadker. http://www.geocities.com/dharwadker/hamilton/