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Regular version of the site

Book chapter

Cut Elimination for the Weak Modal Grzegorczyk Logic via Non-well-Founded Proofs

P. 569-583.
Savateev Y., Shamkanov D. S.

We present a sequent calculus for the weak Grzegorczyk logic 𝖦𝗈 allowing non-well-founded proofs and obtain the cut-elimination theorem for it by constructing a continuous cut-elimination mapping acting on these proofs.