Inductive full satisfaction classes
نویسندگان
چکیده
منابع مشابه
Full Constraint Satisfaction Problems
Feder and Vardi have conjectured that all constraint satisfaction problems to a fixed structure (constraint language) are polynomial or NP-complete. This so-called Dichotomy Conjecture remains open, although it has been proved in a number of special cases. Most recently, Bulatov has verified the conjecture for conservative structures, i.e., structures which contain all possible unary relations....
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A new research project has, quite recently, been launched to clarify how different, from systems in second order number theory extending ACA 0 , those in second order set theory extending NBG (as well as those in n+3-th order number theory extending the so-called Bernays Gödel expansion of full n+2-order number theory etc.) are. In this article, we establish the equivalence between ∆ 1 0-LFP an...
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A new research project has, quite recently, been launched to clarify how different, from systems in second order number theory extending ACA0, those in second order set theory extending NBG (as well as those in n+3-th order number theory extending the so-called Bernays Gödel expansion of full n+2-order number theory etc.) are. In this article, we establish the equivalence between ∆0-LFP and ∆ 1...
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ژورنال
عنوان ژورنال: Annals of Pure and Applied Logic
سال: 1990
ISSN: 0168-0072
DOI: 10.1016/0168-0072(90)90035-z