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10 0 non-negative integer relations on vertices ( 2015-10-08 04:05:59 +0200 )
10 0 non-negative integer relations on vertices ( 2015-10-07 18:17:47 +0200 )
10 0 non-negative integer relations on vertices ( 2015-10-07 15:35:52 +0200 )
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.