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| - | ====== Equality, Decidable FOL Classes, Universal Class and Its Use ====== | + | ====== Equality, Undecidable and Decidable FOL Classes ====== |
| Continuation of [[lecture11]]. | Continuation of [[lecture11]]. | ||
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| [[Finite Models imply Decidability]] | [[Finite Models imply Decidability]] | ||
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| - | [[Turing Machines]] | ||
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| - | [[Halting Problem]] - diagonalization in finite case | ||
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| - | [[Turing-Completeness of 2-counter Machines]] | ||
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| - | [[Undecidability of Tiling]] | ||
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| - | [[Complete Recursive Axiomatizations]] | ||
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| - | [[Goedel's Theorem]] | ||
| [[Classical Decision Problem]] | [[Classical Decision Problem]] | ||
| - | ===== Universal Class ===== | + | ===== Decidable Forall-Exists Class and its Use ===== |
| Motivation: analysis of containers. Set language. Reduction to universal class. Finite models for universal class. | Motivation: analysis of containers. Set language. Reduction to universal class. Finite models for universal class. | ||