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arXiv 0708.3477cs.LO
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带参数的教堂综合问题

The Church Synthesis Problem with Parameters

Alexander Rabinovich

摘要:

对于一元序逻辑(MLO)的二元公式(X,Y),Church综合问题涉及算子Y=F(X)的存在性和构造,使得(X,F(X))在Nat. Büchi和Landweber证明了Church综合问题是可判定的;此外,他们证明了如果存在一个算子F解Church综合问题,那么它也可以由有限状态自动机定义的算子或等价地由MLO公式求解。我们调查的教堂合成问题的参数化版本。在这个版本中可能包含作为参数的一元谓词P.我们表明,P的教堂合成问题是可计算的,当且仅当一元理论的<Nat,<,P>是可判定的。我们证明了Büchi-Landweber定理只能推广到最终周期参数。然而,Büchi-Landweber定理的MLO可定义性部分适用于Church综合问题的参数化版本。

英文摘要:

For a two-variable formula &psi;(X,Y) of Monadic Logic of Order (MLO) the Church Synthesis Problem concerns the existence and construction of an operator Y=F(X) such that &psi;(X,F(X)) is universally valid over Nat. Büchi and Landweber proved that the Church synthesis problem is decidable; moreover, they showed that if there is an operator F that solves the Church Synthesis Problem, then it can also be solved by an operator defined by a finite state automaton or equivalently by an MLO formula. We investigate a parameterized version of the Church synthesis problem. In this version &psi; might contain as a parameter a unary predicate P. We show that the Church synthesis problem for P is computable if and only if the monadic theory of <Nat,<,P> is decidable. We prove that the Büchi-Landweber theorem can be extended only to ultimately periodic parameters. However, the MLO-definability part of the Büchi-Landweber theorem holds for the parameterized version of the Church synthesis problem.

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