On Thu, 2 Jan 2014 12:29:42 David Goldsmith wrote:

> Anyone here use/have an opinion about the Quaternion type @

> rosettacode.org<http://rosettacode.org/wiki/Simple_Quaternion_type_and_opera

> tions#Python>? Or have an opinion about it having derived the type from

> collections.namedtuple? Anyone have an open-source, numpy-based

> alternative? Ditto last question for Octonion and/or general n-basis

> Grassmann (exterior) and/or Clifford Algebras? (rosettacode appears to

> have none of these). Thanks!

Hi David,

Not Numpy based, but:

GluCat http://sourceforge.net/projects/glucat/ is an open source C++ library for calculations in Clifford algebras, based on the C++ Standard Library and Boost uBLAS. It also includes PyClical, a Python extension module coded in Cython. The PyClical tutorials and demos at

http://sourceforge.net/p/glucat/git/ci/master/tree/pyclical/demos/ should

give you an idea of how PyClical can be used with Numpy, SciPy and the rest of Python. See also http://sourceforge.net/p/glucat/git/ci/master/tree/README

If you have compilation problems, try the release_0_7_1-patches branch:

http://sourceforge.net/p/glucat/git/ci/release_0_7_1-patches/

I am always open to feedback and criticism of this code.

All the best, Paul

--

Paul Leopardi

http://www.maths.anu.edu.au/~leopardi