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<H2>What is the Semantics for Classical Logic?</H2>
In the intuitionistic case, the answer to this question is well-understood -
essentially a semantics is given to all proofs in normal form and all other
proofs inherit this semantics from the normal forms they reduce to. This
implies that:
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(1) reductions preserving the semantics of a proof.
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It is widely known that this assumption causes any reasonable semantics
for classical logic to collaps. In the literature Lafont's example is
often cited for this observation.<p>
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Last modified: Sat Mar 3 05:17:53 CET 2007
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