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Truth, false and ambiguous teller riddle. Logical formula deduction

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#first-order-logic #boolean-algebra
992
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FOL to English translation questions.

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#logic #predicate-logic #first-order-logic #logic-translation
114
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Why universal instantiation cannot be used here?

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#logic #first-order-logic
137
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Model for a theory of commutative rings having quantifier elimination

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#logic #commutative-algebra #first-order-logic #model-theory
78
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Prove $Q \vdash [\forall x < \overline{n+1}]\phi \leftrightarrow [\phi^x_{\overline{n}}\land(\forall x <\bar{n})\phi]$

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#logic #first-order-logic #predicate-logic #provability
1.6k
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FOL translation, and definition of a "block" questions.

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#logic #predicate-logic #first-order-logic #quantifiers #logic-translation
268
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How to transform a formula into clausal form?

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#logic #first-order-logic #quantifiers
592
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A formula is satisfiable under $I \iff |I|=1$?

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#logic #computer-science #first-order-logic #model-theory #satisfiability
92
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Equivalence of $I\Sigma_n$ and $I\Pi_n$

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#logic #induction #first-order-logic #model-theory #peano-axioms
298
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Idempotent substitution $\theta$

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#logic #first-order-logic #substitution #idempotents
1k
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How exactly are consistency and satisfiability related in first order logic?

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#first-order-logic #satisfiability
58
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Expressing $y=x!$ as a $\Sigma_1$ formula

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#logic #factorial #first-order-logic #recursion
78
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Can't go from one step to another in my proof

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#discrete-mathematics #logic #predicate-logic #first-order-logic #quantifiers
248
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Partially isomorphic but not isomorphic structures of the same cardinality

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#logic #first-order-logic #model-theory
44
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Clarification on theorem $(\forall x | R : P) \equiv (\forall x |: R \lor P \equiv P)$

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#discrete-mathematics #logic #first-order-logic #quantifiers

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