Tarskian set constraints

Abstract
We investigate set constraints over set expressions with Tarskian functional and relational operations. Unlike the Herbrand constructor symbols used in recent set constraint formalisms, the meaning of a Tarskian function symbol is interpreted in an arbitrary first order structure. We show that satisfiability of Tarskian set constraints is decidabl e in nondeterministic doubly exponential time. We also give complexity results and open problems for various extension s of the language.

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