# Search results

Bulletin of the Section of Logic > 2020 > 49 > 3 > 255-268

Reports on Mathematical Logic > 2018 > Vol. 53 > 43--65

Journal of Automated Reasoning > 2014 > 52 > 1 > 67-97

Journal of Automated Reasoning > 2013 > 51 > 2 > 129-149

**LSJ**, a contraction-free sequent calculus for Intuitionistic propositional logic whose proofs are linearly bounded in the length of the formula to be proved and satisfy the subformula property. We also introduce a sequent calculus

**RJ**for intuitionistic unprovability with the same properties of

**LSJ**. We show that from a refutation of

**RJ**of a sequent

*σ*we can extract a Kripke...