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``Algebraic Conversions'', A mathematical paper introducing a generalisation of homomorphism of universal algebras. In Research Letters in the Information and Mathematical Sciences Vol 2, May 2001. (pub by Massey University New Zealand). see also, \verb|http://www.massey.ac.nz/~wwiims/rlims|

This web link is broken.

My apologies ... http://iims.massey.ac.nz/research/letters/volume2number1/02mills.pdf will get you there. I tested it just now, it works fine. Regards, Bruce.