2005/12/30 by Lin Hu, Hao Li, Hu, Lin +3
Mathematics · #05C15 #05C38 #05C70 #Combinatorics (math.CO) #FOS: Mathematics #math.CO #msc:05C15 #msc:05C38 #msc:05C70
paper · pdf · doi:10.48550/arxiv.math/0512653
This paper has been withdrawn
arxiv created 2007/11/30 · arxiv updated 2011/11/10
This paper has been withdrawn by the author(s), due an error in the proof.