On the number of integral graphs
Linear Algebra and its Applications(2016)
摘要
We show that at most a 2−cn3/2 proportion of graphs on n vertices have integral spectrum. This improves on previous results of Ahmadi, Alon, Blake, and Shparlinski (2009), who showed that the proportion of such graphs was exponentially small.
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关键词
05C50,05C80,15B52
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