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Kripke completeness of implicational intuitionistic logic
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Area of mathematics
Foundations of mathematics
Mathematical logic
Propositional logic
Intuitionistic propositional logic
Implicational fragment of intuitionistic propositional logic
2026-09-28
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For implicational
formulas
Γ
and
φ
,
Γ
⊢
IPC
(
→
)
φ
⟺
Γ
⊨
Kripke
φ
.
(1)
The reverse implication follows from the
canonical Kripke model for implicational intuitionistic logic
and its
truth
lemma.
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Implicational fragment of intuitionistic propositional logic
Intuitionistic propositional logic
Propositional logic
Mathematical logic
Foundations of mathematics
Area of mathematics
Mathematics
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(2)
Conservativity of intuitionistic propositional logic over its implicational fragment
Past exam of the mathematics course of the University of Cambridge
/
2022
/
iii
/
Paper 120
/
1
/
d
/
Solution
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