J. Aust. Math. Soc.  82 (2007), 183-207
Perfect effect algebras are categorically equivalent with Abelian interpolation po-groups

Anatolij Dvurecenskij
  Mathematical Institute
  Slovak Academy of Sciences
  Stefánikova 49
  SK-814 73 Bratislava

We introduce perfect effect algebras and we show that every perfect algebra is an interval in the lexicographical product of the group of all integers with an Abelian directed interpolation po-group. To show this we introduce prime ideals of effect algebras with the Riesz decomposition property (RDP). We show that the category of perfect effect algebras is categorically equivalent to the category of Abelian directed interpolation po-groups. Moreover, we prove that any perfect effect algebra is a subdirect product of antilattice effect algebras with the RDP.
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