Hyonju Yu

activity

20102014

most citedAn inequality involving the second largest and smallest eigenvalue of a distance-regular graph

2 citations · 2 across the 4 of their papers we have counts for

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Showing 2011Show all

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math.CO2011

On the limit points of the smallest eigenvalues of regular graphs

Hyonju Yu

In this paper, we give infinitely many examples of (non-isomorphic) connected $k$ -regular graphs with smallest eigenvalue in half open interval $[- 1 - 2, - 2)$ and also infinitel…

math.CO2011

The distance-regular graphs such that all of its second largest local eigenvalues are at most one

Jack H. Koolen, Hyonju Yu

In this paper, we classify distance regular graphs such that all of its second largest local eigenvalues are at most one. Also we discuss the consequences for the smallest eigenval…