MALL Proof Equivalence is Logspace-Complete, via Binary Decision Diagrams
From MaRDI portal
Publication:5277831
DOI10.4230/LIPICS.TLCA.2015.60zbMATH Open1433.03144arXiv1502.01993OpenAlexW2962840813MaRDI QIDQ5277831
Author name not available (Why is that?)
Publication date: 12 July 2017
Abstract: Proof equivalence in a logic is the problem of deciding whether two proofs are equivalent modulo a set of permutation of rules that reflects the commutative conversions of its cut-elimination procedure. As such, it is related to the question of proofnets: finding canonical representatives of equivalence classes of proofs that have good computational properties. It can also be seen as the word problem for the notion of free category corresponding to the logic. It has been recently shown that proof equivalence in MLL (the multiplicative with units fragment of linear logic) is PSPACE-complete, which rules out any low-complexity notion of proofnet for this particular logic. Since it is another fragment of linear logic for which attempts to define a fully satisfactory low-complexity notion of proofnet have not been successful so far, we study proof equivalence in MALL- (multiplicative-additive without units fragment of linear logic) and discover a situation that is totally different from the MLL case. Indeed, we show that proof equivalence in MALL- corresponds (under AC0 reductions) to equivalence of binary decision diagrams, a data structure widely used to represent and analyze Boolean functions efficiently. We show these two equivalent problems to be LOGSPACE-complete. If this technically leaves open the possibility for a complete solution to the question of proofnets for MALL-, the established relation with binary decision diagrams actually suggests a negative solution to this problem.
Full work available at URL: https://arxiv.org/abs/1502.01993
No records found.
No records found.
This page was built for publication: MALL Proof Equivalence is Logspace-Complete, via Binary Decision Diagrams
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q5277831)
