The **Ontario Research Centre for Computer Algebra** (ORCCA) performs
fundamental research and development in computer algebra.

Faculty from the University of Waterloo and the University of Western Ontario conduct research on a range of topics in computer algebra including:

- symbolic linear and non-linear algebra
- computer algebra software, see Maple and the RegularChains library
- high-performance computer algebra, see BPAS and CUMODP
- symbolic-numeric algorithms
- languages and programming environments, see Aldor and MetaFork
- symbolic analysis of ODE's and PDE's
- software for mathematical communication: MathML @ ORCCA, MONET @ ORCCA and PenMath @ ORCCA
- Rational orthornormal R matrices constructed with Pythagorean n-tuples: This repository contains 3X3 R matrices and 4X4 R matrices.