Enabling four-dimensional conformal hybrid meshing with cubic pyramids

Miroslav S. Petrov, Todor D. Todorov, Gage S. Walters, David M. Williams, Freddie D. Witherden

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The main purpose of this article is to develop a novel refinement strategy for four-dimensional hybrid meshes based on cubic pyramids. This optimal refinement strategy subdivides a given cubic pyramid into a conforming set of congruent cubic pyramids and invariant bipentatopes. The theoretical properties of the refinement strategy are rigorously analyzed and evaluated. In addition, a new class of fully symmetric quadrature rules with positive weights are generated for the cubic pyramid. These rules are capable of exactly integrating polynomials with degrees up to 12. Their effectiveness is successfully demonstrated on polynomial and transcendental functions. Broadly speaking, the refinement strategy and quadrature rules in this paper open new avenues for four-dimensional hybrid meshing, and space-time finite element methods.

Original languageEnglish (US)
Pages (from-to)671-709
Number of pages39
JournalNumerical Algorithms
Issue number2
StatePublished - Oct 2022

All Science Journal Classification (ASJC) codes

  • Applied Mathematics


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