G4 Prover

Result of the test for sequent (p/\q)\/(p/\r) --> p\/(q/\r)

G4 Prover: a Prolog Prover for Roy Dyckhoff's Sequent Calculus G4 This prover is a fork made by Joseph Vidal-Rosset (joseph.vidal-rosset@gmail.com), from seqprover.pl, the sequent prover for CL-X, written by Naoyuki Tamura (tamura@kobe-u.ac.jp). Type "help." if you need some help. fol(g4i)> fol(g4i). yes fol(g4i)> output(pretty). yes fol(g4i)> (p/\q)\/p/\r-->p\/q/\r. Trying to prove with threshold = 0 Succeed in proving (p/\q)\/p/\r --> p\/q/\r (2 msec.) pretty:1 = --------- Ax --------- Ax p,q --> p p,r --> p --------------- R\/ --------------- R\/ p,q --> p\/q/\r p,r --> p\/q/\r ---------------- L/\ ---------------- L/\ p/\q --> p\/q/\r p/\r --> p\/q/\r -------------------------------------- L\/ (p/\q)\/p/\r --> p\/q/\r yes fol(g4i)> quit. yes Exit from Sequent Calculus Prover... Total CPU time = 4 msec. true

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