Gauss-Chebyshev quadrature points

Figure 4 Distribution of Lanczos eigenvalues in the H02 system (adapted with permission from Ref. 40) and Gauss-Chebyshev quadrature points.

If the sampling points axe chosen uniformly on the upper half circle and projected down onto the real axis, they are Gauss-Chebyshev quadrature points. To... 

Figure 4.4 The Newton interpolation sampling points used to represent the eigenvalue spectrum of the ABC linear system. This sampling uses K = 64 points shifted down from the real axis by <5 = 0. The lines in the interior manifest the staggering. At each pass around the circle, ristag = 4 points are taken. The points on the real axis, which are projected down from the upper half circle, are Gauss-Chebyshev quadrature points.

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