This paper considers the lower and upper bounds of Eigenvalues of arrow-head matrices. We propose a parameterized decomposition of an arrowhead matrix which is a sum of a diagonal matrix and a special kind of arrowhead matrix whose Eigenvalues can be computed explicitly. The Eigenvalues of the arrowhead matrix are then estimated in terms of Eigenvalues of the diagonal matrix and the special arrowhead matrix by using Weyl s theorem. ...
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