Symmetric quadrature rules for simplexes based on sphere closed packed lattice arrangements

D. M. Williams, L. Shunn, A. Jameson

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Sphere closed packed (SCP) lattice arrangements of points are well-suited for formulating symmetric quadrature rules on simplexes, as they are symmetric under affine transformations of the simplex unto itself in 2D and 3D. As a result, SCP lattice arrangements have been utilized to formulate symmetric quadrature rules with Np=1, 4, 10, 20, 35, and 56 points on the 3-simplex (Shunn and Ham, 2012). In what follows, the work on the 3-simplex is extended, and SCP lattices are employed to identify symmetric quadrature rules with Np=1, 3, 6, 10, 15, 21, 28, 36, 45, 55, and 66 points on the 2-simplex and Np=84 points on the 3-simplex. These rules are found to be capable of exactly integrating polynomials of up to degree 17 in 2D and up to degree 9 in 3D.

Original languageEnglish (US)
Pages (from-to)18-38
Number of pages21
JournalJournal of Computational and Applied Mathematics
Volume266
DOIs
StatePublished - Aug 15 2014

All Science Journal Classification (ASJC) codes

  • Computational Mathematics
  • Applied Mathematics

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