Math Forum http://mathforum.org/kb List of forum topics en Martian Math (a geometry) http://mathforum.org/kb/thread.jspa?messageID=6897634&tstart=0#6897634 regarding a geometry, published since 1970s, that's given
rise to several branches]]> Nov 14, 2009 12:38:30 PM Nov 14, 2009 12:38:30 PM urner@alumni.princeton.edu 0