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Current File : /usr/home/beeson/public_html/michaelbeeson/research/FormalTarski/Proofs/NarbouxLemma1.prf

Length of proof is 4.  Level of proof is 2.
 
---------------- PROOF ----------------
 
13 [] E(xa,xb,xa,xb).
22 [] -E(xa,xb,xc,xd)|E(xb,xa,xd,xc).
25 [] -T(xa,xb,xc)|T(xc,xb,xa).
26 [] T(xa1,xa1,xb1).
42 [] -T(xa,xb,xc)| -T(xa1,xb1,xc1)| -E(xa,xc,xa1,xc1)| -E(xb,xc,xb1,xc1)|E(xa,xb,xa1,xb1).
58 [] -T(xa,xc,xb)| -E(xa,xc,xa,xc1)| -E(xb,xc,xb,xc1)|xc=xc1.
105 [] T(a,b,c).
106 [] E(a,c,a,b).
107 [] c!=b.
144 [binary,105.1,25.1] T(c,b,a).
269 [binary,106.1,22.1] E(c,a,b,a).
338 [ur,58,26,106,107] -E(c,c,c,b).
838 [hyper,42,26,144,13,269] E(c,c,c,b).
839 [binary,838.1,338.1] $F.

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