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1.
There is a symmetric nonnegative matrix A, subordinate to a given bipartite graph G on n vertices, with eigenvalues 12
n
if and only if, 1 +
n
0, 2 +
n-10,...,
m
+
n - m + 10,
m + 10,...,
n - m
0, in which m is the matching numberof G. Other observations are also made about the symmetric nonnegative inverse eigenvalue problem with respect to a graph 相似文献
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