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| Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/ExtPerp4.prf |
Length of proof is 3. Level of proof is 2. ---------------- PROOF ---------------- 142 [] -perp(xa,xb,xp,xq)|perp(xp,xq,xa,xb). 165 [] -perp(xa,xb,xp,xq)|perp(xb,xa,xp,xq). 241 [] perp(a,b,p,q). 242 [] -perp(a,b,q,p). 253 [binary,241.1,142.1] perp(p,q,a,b). 283 [binary,242.1,142.2] -perp(q,p,a,b). 323 [binary,253.1,165.1] perp(q,p,a,b). 324 [binary,323.1,283.1] $F.