If and only if
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What links here
First-order logic
Gödel's ontological proof
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Gödel's completeness theorem
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Game theory
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Frame problem
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Formal language
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Four color theorem
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Field (mathematics)
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Epsilon
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Empty set
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Euclidean geometry
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Existence
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Equivalence relation
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Database normalization
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Cardinality
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P versus NP problem
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Communication
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Naive set theory
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Automated theorem proving
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Axiom of regularity
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Algebraic geometry
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Artificial intelligence
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Algebraically closed field
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Axiom
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Axiom of choice
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Algebraic structure
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Existential quantification
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Equality (mathematics)
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CycL
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Data model
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Proposition
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Universal quantification
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Consistency
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Contradiction
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Conjunctive normal form
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Wilhelm Ackermann
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Venn diagram
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Abstract machine
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Abductive reasoning
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History of logic
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Alfred Tarski
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Gödel's incompleteness theorems
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Classical logic
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Unification (computer science)
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Inductive logic programming
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Ontological commitment
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Axiom schema of replacement
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Hyperreal number
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Zorn's lemma
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Natural deduction
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First-order predicate calculus
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First-order predicate logic
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Predicate calculus
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First order logic
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Predicate Calculus
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Predicate logic
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