Chandogya Upanisad -- mathematics and ritual

[Toke Lindegaard Knudsen]

> "the science of ritual" (as can be seen from Olivelle's own notes, which
> you may find useful otherwise as well) is "brahmavidyA", and "mathematics"
> is "rAzi" [in other transcriptions "ra-s'i" or "raas'i"]. rAzi, m. in the
> standard dictionaries means: 1. heap, mass, pile, quantity, number 2. a
> sign of the Zodiac.

Thank you for your help.  It does not seem that the "mathematics"
(rAzi) mentioned in the Upanisad has any connection as such with
geometry of altars.

Sincerely,
Toke Lindegaard Knudsen