On the Proof Complexity of Deep Inference
arXiv:0709.1201 · doi:10.1145/1462179.1462186
Abstract
We obtain two results about the proof complexity of deep inference: 1) deep-inference proof systems are as powerful as Frege ones, even when both are extended with the Tseitin extension rule or with the substitution rule; 2) there are analytic deep-inference proof systems that exhibit an exponential speed-up over analytic Gentzen proof systems that they polynomially simulate.
Minor improvements over the published version. Always updated version at <http://cs.bath.ac.uk/ag/p/PrComplDI.pdf>