G4 Prover
    
Result of the test for sequent p/\q <--> q/\p 



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<-->q/\p.
Trying to prove with threshold = 0
Succeed in proving p/\q --> q/\p (1 msec.)
pretty:1 =
--------- Ax  --------- Ax
p,q --> q     p,q --> p
----------------------- R/\
     p,q --> q/\p
     ------------- L/\
     p/\q --> q/\p
Trying to prove with threshold = 0
Succeed in proving q/\p --> p/\q (0 msec.)
pretty:2 =
--------- Ax  --------- Ax
q,p --> p     q,p --> q
----------------------- R/\
     q,p --> p/\q
     ------------- L/\
     q/\p --> p/\q
yes
fol(g4i)> quit.
yes
Exit from Sequent Calculus Prover...
Total CPU time = 5 msec.
true 


  

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Maintained by  Joseph Vidal-Rosset