Anyone here use/have an opinion about the Quaternion type @ rosettacode.org? 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!David Goldsmith
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