Skip to main content
4 events
when toggle format what by license comment
May 3, 2015 at 10:04 comment added Hugh Thomas That"s a much simpler way to put it than occurred to me, thank you!
May 3, 2015 at 0:33 vote accept Torsten Mütze
May 3, 2015 at 0:30 comment added Torsten Mütze Great! This graph has no perfect matching since there are nine 2-element sets $A_i$ but only eight 3-elements sets $A_i\cup j$.
May 2, 2015 at 14:00 history answered Hugh Thomas CC BY-SA 3.0