Lovász (1978) proved this using topological methods, giving rise to the field of topological combinatorics, and in 2002 Joshua Greene won the Frank and Brennie Morgan Prize for Outstanding Research in Mathematics by an Undergraduate Student for a simplified but still topological proof.
Lovász (1978) proved this using topological methods. Lovász (1978) was giving rise to the field of topological combinatorics. Joshua Greene won the Frank and Brennie Morgan Prize for Outstanding Research in Mathematics by an Undergraduate Student for a simplified but still topological proof. This was in 2002.