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    Computable Structures and the Hyperarithmetical Hierarchy

    By: J. Knight, C.J. Ash

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    ISBN
    9780080529523
    Date Released
    Binding
    eBook
     
     

    Out of Print

    Description
    This book describes a program of research in computable structure theory. The goal is to find definability conditions corresponding to bounds on complexity which persist under isomorphism. The results apply to familiar kinds of structures (groups, fields, vector spaces, linear orderings Boolean algebras, Abelian p-groups, models of arithmetic). There are many interesting results already, but there are also many natural questions still to be answered. The book is self-contained in that it includes necessary background material from recursion theory (ordinal notations, the hyperarithmetical hierarchy) and model theory (infinitary formulas, consistency properties).

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