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14.10.2026

Interpolation without equality

In one or another logic, and assuming the presence of the symbols ⊥ and ⊤ for falsity and truth, interpolation theorem IT is the following claim. If the formula φ→ψ is valid, as determined by the semantics of the logic in question, then there exists a formula μ, called interpolant of φ and ψ, such that φ→μ and μ→ψ are valid and μ is built up from the extralogical symbols that occur in both φ and ψ. In propositional logic extralogical symbols are just atoms, and examples of logics for which …

21.10.2026

TDB

Přednáška — Han Gao ( ICS CAS).

6.11.2026

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