Y = 2x vs. Y = 3x

Journal of Symbolic Logic 62 (2):661-672 (1997)
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Abstract

We show that no formula of first order logic using linear ordering and the logical relation y = 2x can define the property that the size of a finite model is divisible by 3. This answers a long-standing question which may be of relevance to certain open problems in circuit complexity

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reprint Stolboushkin, Alexei; Niwinski, Damian (1997) "$Y = 2x$ vs. $y = 3x$". Journal of Symbolic Logic 62(2):661-672

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Weak Second‐Order Arithmetic and Finite Automata.J. Richard Büchi - 1960 - Mathematical Logic Quarterly 6 (1-6):66-92.
¹1-formulae on finite structures.M. Ajtai - 1983 - Annals of Pure and Applied Logic 24 (1):1.

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