## Universal profinite domains.(English)Zbl 0628.68050

The author introduces and studies the profinite domains in the order- theoretic approach to programming semantics. The mathematical problem of the existence of a profinite universal domain is investigated. Thus, the paper provides and explains a technique for constructing an infinite class of universal profinite domains. The category of profinite domains and continuous functions is shown to be bicartesian closed and necessary conditions are provided for the existence of solutions of domain equations within this category. According to the author, “this is a rather natural, and in a sense inevitable, category which contains SFP (see Plotkin, 1976) as a full subcategory”. An approach similar to information systems is extended to categories larger than the one considered by Scott.
Reviewer: G.Ciobanu

### MSC:

 68Q99 Theory of computing 68Q60 Specification and verification (program logics, model checking, etc.) 18B35 Preorders, orders, domains and lattices (viewed as categories) 18D15 Closed categories (closed monoidal and Cartesian closed categories, etc.)
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### References:

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