Several new quadrature formulas for polynomial integration in the triangle

We present several new quadrature formulas in the triangle for exact integration of polynomials. The points were computed numerically with a cardinal function algorithm which imposes that the number of quadrature points $N$ be equal to the dimension of a lower dimensional polynomial space. Quadratur...

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Hauptverfasser: Taylor, Mark A, Wingate, Beth A, Bos, Len P
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Sprache:eng
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Zusammenfassung:We present several new quadrature formulas in the triangle for exact integration of polynomials. The points were computed numerically with a cardinal function algorithm which imposes that the number of quadrature points $N$ be equal to the dimension of a lower dimensional polynomial space. Quadrature forumulas are presented for up to degree $d=25$, all which have positive weights and contain no points outside the triangle. Seven of these quadrature formulas improve on previously known results.
DOI:10.48550/arxiv.math/0501496