Abstract. We solve a restricted version of the Finite Type Problem from natural duality theory: if a finite unary algebra is dualisable, then it is dualisable via a finite set of relations.
AMS Subject Classification
(1991): 08C20, 08A60
Keyword(s):
natural duality,
dualizable,
unary algebra,
Hanf number for dualizability
Received April 14, 2010, and in final form August 25, 2010. (Registered under 26/2010.)
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