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Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/Satz6.6.prf

Length of proof is 4.  Level of proof is 2.
 
---------------- PROOF ----------------
 
119 [] -sameside(xa,xp,xb)|xa!=xp.
120 [] -sameside(xa,xp,xb)|xb!=xp.
121 [] -sameside(xa,xp,xb)|T(xp,xa,xb)|T(xp,xb,xa).
122 [] -T(xp,xa,xb)|xa=xp|xb=xp|sameside(xa,xp,xb).
123 [] -T(xp,xb,xa)|xa=xp|xb=xp|sameside(xa,xp,xb).
124 [] sameside(a,p,b).
125 [] -sameside(b,p,a).
126 [binary,124.1,121.1] T(p,a,b)|T(p,b,a).
127 [binary,124.1,120.1] b!=p.
128 [binary,124.1,119.1] a!=p.
141 [binary,125.1,122.4,unit_del,127,128] -T(p,b,a).
256 [binary,126.1,123.1,unit_del,141,127,128,125] $F.

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