Choiceless Polynominal Time Logic: Inability to Express

نویسنده

  • Saharon Shelah
چکیده

We prove for the logic ∼ CPT ime (the logic from the title) a sufficient condition for two models to be equivalent for any set of sentences which is “small” (certainly any finite set ), parallel to the Ehrenfeucht Fräıssé games. This enables us to show that sentences cannot express some properties in the logic ∼ CPT ime and prove 0-1 laws for it.

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تاریخ انتشار 2000