Abstract
We provide a constructive, direct and simple proof of the completeness of the cut-free part of the hypersequential calculus HG for Godel logic (thereby proving both completeness of the calculus for its standard semantics, and the admissibility of the cut rule in the full calculus). We then extend the results and proofs to derivations from assumptions, showing that such derivations can be confined to those in which cuts are made only on formulas which occur in the assumptions. The article is self-contained, and no previous knowledge concerning HG (or even Godel logic) is needed for understanding it.
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