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Henkin/branching quantifier considered unnecessary

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#predicate-logic #quantifiers
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
353
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Game semantics for first-order logic

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#logic #predicate-logic #model-theory #game-theory
77
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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
378
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Proving this sequent using natural deduction

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#logic #first-order-logic #predicate-logic #quantifiers #natural-deduction
86
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Proving complicated predicate calculus sequent

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#logic #first-order-logic #predicate-logic #quantifiers #natural-deduction
98
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Show that Skolemization preserves satisfiability

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#logic #computer-science #first-order-logic #predicate-logic #model-theory
523
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Empty set, subsets, and vacuous truths

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#elementary-set-theory #logic #definition #predicate-logic
833
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Problem of quantifiers and predicate.

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#discrete-mathematics #logic #predicate-logic #quantifiers
1.2k
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Symbolize the following sentences with the given symbolization key

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#logic #predicate-logic #quantifiers #logic-translation
256
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Is forall and exists predicates?

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#elementary-set-theory #logic #notation #definition #predicate-logic
102
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Boolean law on predicate logic

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#first-order-logic #predicate-logic
248
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Hilbert style axiom system without generalisation

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#logic #first-order-logic #predicate-logic #proof-theory #hilbert-calculus
30
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Showing that if $M,s \vDash \exists x \varphi$ then $N,s \vDash \exists x \varphi$

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#logic #first-order-logic #predicate-logic #model-theory #quantifiers

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