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Topic: Eigenvalue degeneracies of parameterized Hermitian matrices
Replies: 1   Last Post: Oct 10, 2011 4:40 PM

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Lou Pagnucco

Posts: 25
Registered: 12/13/04
Eigenvalue degeneracies of parameterized Hermitian matrices
Posted: Oct 10, 2011 9:58 AM
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If H(x,y) is an NxN parameterized Hermitian matrix, where x,y are
what are the maximum number of points at which the two smallest
are degenerate in the xy-plane if m (<N) entries of H(x,y) are

(a) linear in x and y?
(b) quadratic in x and y?

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