dc.date.accessioned | 2022-06-30T15:17:56Z | |
dc.date.available | 2022-06-30T15:17:56Z | |
dc.date.created | 2022-05-23T09:42:53Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Lyche, Tom Manni, Carla Speleers, Hendrik . Construction of C2 Cubic Splines on Arbitrary Triangulations. Foundations of Computational Mathematics. 2022 | |
dc.identifier.uri | http://hdl.handle.net/10852/94529 | |
dc.description.abstract | In this paper, we address the problem of constructing C2 cubic spline functions on a given arbitrary triangulation T. To this end, we endow every triangle of T with a Wang–Shi macro-structure. The C2 cubic space on such a refined triangulation has a stable dimension and optimal approximation power. Moreover, any spline function in this space can be locally built on each of the macro-triangles independently via Hermite interpolation. We provide a simplex spline basis for the space of C2 cubics defined on a single macro-triangle which behaves like a Bernstein/B-spline basis over the triangle. The basis functions inherit recurrence relations and differentiation formulas from the simplex spline construction, they form a nonnegative partition of unity, they admit simple conditions for C2 joins across the edges of neighboring triangles, and they enjoy a Marsden-like identity. Also, there is a single control net to facilitate control and early visualization of a spline function over the macro-triangle. Thanks to these properties, the complex geometry of the Wang–Shi macro-structure is transparent to the user. Stable global bases for the full space of C2 cubics on the Wang–Shi refined triangulation T are deduced from the local simplex spline basis by extending the concept of minimal determining sets. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Construction of C2 Cubic Splines on Arbitrary Triangulations | |
dc.title.alternative | ENEngelskEnglishConstruction of C2 Cubic Splines on Arbitrary Triangulations | |
dc.type | Journal article | |
dc.creator.author | Lyche, Tom | |
dc.creator.author | Manni, Carla | |
dc.creator.author | Speleers, Hendrik | |
cristin.unitcode | 185,15,13,0 | |
cristin.unitname | Matematisk institutt | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 2026363 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Foundations of Computational Mathematics&rft.volume=&rft.spage=&rft.date=2022 | |
dc.identifier.jtitle | Foundations of Computational Mathematics | |
dc.identifier.pagecount | 0 | |
dc.identifier.doi | https://doi.org/10.1007/s10208-022-09553-z | |
dc.identifier.urn | URN:NBN:no-97099 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 1615-3375 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/94529/1/Lyche2022_Article_ConstructionOfC2C2CubicSplines.pdf | |
dc.type.version | PublishedVersion | |