| Current Path : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/ |
| Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/Satz7.4a.prf |
Length of proof is 2. Level of proof is 2. ---------------- PROOF ---------------- 4 [] T(x,y,ext(x,y,w,v)). 5 [] E(y,ext(x,y,w,v),w,v). 14 [] -E(xa,xb,xc,xd)|E(xc,xd,xa,xb). 148 [] -T(xa,xm,xb)| -E(xm,xa,xm,xb)|M(xa,xm,xb). 156 [] -M(p,a,x). 163 [ur,148,4,156] -E(a,p,a,ext(p,a,x,y)). 369 [binary,163.1,14.2] -E(a,ext(p,a,x,y),a,p). 370 [binary,369.1,5.1] $F.