Explicit constructions and an O(n²) spectral decomposition invert the univariate Bernstein mass matrix with Cholesky-comparable accuracy and reduced conditioning in the L² norm on polynomials.
Kirby and Kieu Tri Thinh
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Structured inversion of the Bernstein mass matrix
Explicit constructions and an O(n²) spectral decomposition invert the univariate Bernstein mass matrix with Cholesky-comparable accuracy and reduced conditioning in the L² norm on polynomials.