Proof Search in Minimal Logic [chapter]

Helmut Schwichtenberg
2004 Lecture Notes in Computer Science  
Case identity, i.e. Q:r = r^C. Then Q:r = r^C =) " QC: Case , i.e. Q: x r = x s^C. We may assume here that the bound variablesx are the same on both sides. Q: xr = x s^C =) " Q8x:r = s^C: Case rigid-rigid, i.e. Q:fr = fs^C. Q:fr = fs^C =) " Q:r =s^C:
doi:10.1007/978-3-540-30210-0_3 fatcat:h2lrsrcemrf4haxumiedhsw7bi