English

Randomized Projection Operators onto Piecewise Polynomial Spaces

Numerical Analysis 2026-02-05 v1 Numerical Analysis

Abstract

We introduce computable projection operators onto piecewise polynomial spaces, defined via sampling and discrete least-squares polynomial approximations. The resulting mappings exhibit (almost) optimal approximation properties in L2L^2 and H1H^{-1}. As smoothers for incomplete or rough data, they yield computable finite element discretizations with optimal convergence rates.

Keywords

Cite

@article{arxiv.2602.04490,
  title  = {Randomized Projection Operators onto Piecewise Polynomial Spaces},
  author = {Johannes Storn},
  journal= {arXiv preprint arXiv:2602.04490},
  year   = {2026}
}
R2 v1 2026-07-01T09:35:49.857Z