Elliptical higher rank numerical range of some Toeplitz matrices
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DOI: 10.1016/j.laa.2018.03.024
Abstract: Abstract The higher rank numerical range is described for a class of matrices which happen to be unitarily reducible to direct sums of (at most) 2-by-2 blocks. In particular, conditions are established under which tridiagonal… read more here.
Keywords: rank numerical; rank; higher rank; numerical range ... See more keywords