Open Problem Garden - odd-crossing number - Comments http://www.openproblemgarden.org/category/odd_crossing_number Comments for "odd-crossing number" en odd-crossing number http://www.openproblemgarden.org/category/odd_crossing_number <br /> http://www.openproblemgarden.org/category/odd_crossing_number#comment Tue, 03 Nov 2009 12:01:08 +0100 37121 at http://www.openproblemgarden.org