ZHAO Ke, LI Jingwen, WEI Zhongde, et al. Elegant conjecture of bicyclic graphs[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2019,58(2):148-154.
ZHAO Ke, LI Jingwen, WEI Zhongde, et al. Elegant conjecture of bicyclic graphs[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2019,58(2):148-154. DOI: 10.13471/j.cnki.acta.snus.2019.02.019.
A recursive backtracking algorithm is designed by combining pruning with pre-judgment function. All the bicyclic graphs in 16 points are elegantly verified
and all elegant and non-elegant graphs in 16 points are obtained. According to the experimental results
when 4≤p≤16 and
p
+1=1(mod 4)
the bicyclic graphs
C
(m
n)
is a non-elegant graph
and the number of non-elegant graphs are p/2-2
and all the other bicyclic graphs are elegant graphs. Finally
the conjecture is given: the bicyclic graphs are almost all elegant graphs.
关键词
双圈图优雅图优雅标号双圈图优雅性猜想
Keywords
bicyclic graphselegant graphselegant labelingelegant conjecture of bicyclic graphs