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Timeline for "Common-neighbor-regular" graphs

Current License: CC BY-SA 3.0

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Mar 25, 2016 at 8:48 vote accept Dominic van der Zypen
Mar 25, 2016 at 6:37 history edited Fedor Petrov CC BY-SA 3.0
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Mar 25, 2016 at 6:08 history edited Fedor Petrov CC BY-SA 3.0
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Mar 25, 2016 at 6:05 comment added Fedor Petrov Ah, of course, thank you, in 'straightforward' part we use that $k>1$. But $k=1$ is another well known problem.
Mar 24, 2016 at 22:36 comment added Aaron Meyerowitz This is a nice analysis but there is a problem with it, at least for $k=1.$ Then you can have $2t$ vertices of degree $2=k+1$ all joined to a vertex of degree $2t.$
Mar 24, 2016 at 22:05 history edited Fedor Petrov CC BY-SA 3.0
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Mar 24, 2016 at 13:06 comment added Dominic van der Zypen Thanks @Fedor for your thoughts! I will think about it... I hope it's OK if I don't accept it yet as it is not yet a full answer, but it provides valuable insights (so I voted it up). Happy Easter
Mar 24, 2016 at 12:14 history answered Fedor Petrov CC BY-SA 3.0