| Current Path : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/ |
| Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/Lemma9.13a.prf |
Length of proof is 1. Level of proof is 1. ---------------- PROOF ---------------- 187 [] xa=xb| -samesideline(xp,xq,xa,xb)|samesideline(xp,xq,xb,xa). 274 [] -samesideline(xa,xb,xp,xq)|xp!=xq. 279 [] samesideline(p,q,a,b). 280 [] -samesideline(p,q,b,a). 283 [binary,279.1,274.1] a!=b. 296 [binary,279.1,187.2,unit_del,283,280] $F.