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Fixed-point extensions of first-order logic
Gurevich, Yuri; Shelah, Saharon
1986
Citation:Gurevich, Yuri, Shelah, Saharon (1986)."Fixed-point extensions of first-order logic." Annals of Pure and Applied Logic 32(): 265-280. <http://hdl.handle.net/2027.42/26387>
Abstract: We prove that the three extensions of first-order logic by means of positive inductions, monotone inductions, and so-called non-monotone (in our terminology, inflationary) inductions respectively, all have the same expressive power in the case of finite structures.