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| Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/Satz4.11d.prf |
Length of proof is 2. Level of proof is 1. ---------------- PROOF ---------------- 47 [] -Col(xa,xb,xc)|Col(xc,xa,xb). 48 [] -Col(xa,xb,xc)|Col(xc,xb,xa). 77 [] Col(a,b,c). 78 [] -Col(b,a,c). 81 [binary,77.1,47.1] Col(c,a,b). 86 [binary,78.1,48.2] -Col(c,a,b). 87 [binary,86.1,81.1] $F.