My friend and collaborator Charley MacMartin tells me that friends of his may visit this site looking for the problem tree. Welcome! Please do register and also let me know if you have questions, comments, suggestions, links etc.
My friend and collaborator Charley MacMartin tells me that friends of his may visit this site looking for the problem tree. Welcome! Please do register and also let me know if you have questions, comments, suggestions, links etc.