A hybrid interpolation-regression operator is defined for numerical integration over ellipses, annuli, and polygons, with an operator norm bound and associated cubature formulas.
L´ opez, Rafael Navarro, and Ester P´ erez Sinus´ ıa
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A mixed interpolation-regression method for numerical integration on some planar domains
A hybrid interpolation-regression operator is defined for numerical integration over ellipses, annuli, and polygons, with an operator norm bound and associated cubature formulas.