6533b821fe1ef96bd127c0c1

RESEARCH PRODUCT

Residuenabschätzung für Polynom-Nullstellen mittels Lagrange-Interpolation

Wolfgang Börsch-supan

subject

Computational Mathematicssymbols.namesakeApplied MathematicsNumerical analysisMathematical analysisLagrange polynomialsymbolsApplied mathematicsMultiplicity (mathematics)Wilkinson's polynomialMathematics

description

If, for each zero of a polynomial, an approximation is known, estimates for the errors of these approximations are given, based on the evaluation of the polynomial at these points. The procedure can be carried over to the case of multiple roots and root clusters using derivatives up to the orderk - 1, wherek is the multiplicity of the cluster.

https://doi.org/10.1007/bf02163336