let am, bp, cm, dp be non pair set ; :: thesis: for cin being set st cin <> [<*dp,(GFA2AdderOutput am,bp,cm)*>,and2 ] & not cin in InnerVertices (BitGFA2Str am,bp,cm) holds
for s being State of (BitFTA2Circ am,bp,cm,dp,cin)
for a1, a2, a3, a4, a5 being Element of BOOLEAN st a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin holds
( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 )
let cin be set ; :: thesis: ( cin <> [<*dp,(GFA2AdderOutput am,bp,cm)*>,and2 ] & not cin in InnerVertices (BitGFA2Str am,bp,cm) implies for s being State of (BitFTA2Circ am,bp,cm,dp,cin)
for a1, a2, a3, a4, a5 being Element of BOOLEAN st a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin holds
( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 ) )
assume A1: ( cin <> [<*dp,(GFA2AdderOutput am,bp,cm)*>,and2 ] & not cin in InnerVertices (BitGFA2Str am,bp,cm) ) ; :: thesis: for s being State of (BitFTA2Circ am,bp,cm,dp,cin)
for a1, a2, a3, a4, a5 being Element of BOOLEAN st a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin holds
( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 )
let s be State of (BitFTA2Circ am,bp,cm,dp,cin); :: thesis: for a1, a2, a3, a4, a5 being Element of BOOLEAN st a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin holds
( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 )
set S = BitFTA2Str am,bp,cm,dp,cin;
set S1 = BitGFA2Str am,bp,cm;
set C1 = BitGFA2Circ am,bp,cm;
set A1 = GFA2AdderOutput am,bp,cm;
set S2 = BitGFA1Str (GFA2AdderOutput am,bp,cm),cin,dp;
set C2 = BitGFA1Circ (GFA2AdderOutput am,bp,cm),cin,dp;
let a1, a2, a3, a4, a5 be Element of BOOLEAN ; :: thesis: ( a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin implies ( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 ) )
assume A2: ( a1 = s . am & a2 = s . bp & a3 = s . cm & a4 = s . dp & a5 = s . cin ) ; :: thesis: ( (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) & (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 )
A3: ( am in the carrier of (BitGFA2Str am,bp,cm) & bp in the carrier of (BitGFA2Str am,bp,cm) & cm in the carrier of (BitGFA2Str am,bp,cm) ) by GFACIRC1:118;
reconsider s1 = s | the carrier of (BitGFA2Str am,bp,cm) as State of (BitGFA2Circ am,bp,cm) by FACIRC_1:26;
reconsider t = s as State of ((BitGFA2Circ am,bp,cm) +* (BitGFA1Circ (GFA2AdderOutput am,bp,cm),cin,dp)) ;
A4: GFA2AdderOutput am,bp,cm in the carrier of (BitGFA2Str am,bp,cm) by GFACIRC1:118;
A5: InputVertices (BitGFA2Str am,bp,cm) misses InnerVertices (BitGFA1Str (GFA2AdderOutput am,bp,cm),cin,dp) by LemmaX32;
dom s1 = the carrier of (BitGFA2Str am,bp,cm) by CIRCUIT1:4;
then ( a1 = s1 . am & a2 = s1 . bp & a3 = s1 . cm ) by A2, A3, FUNCT_1:70;
then ( (Following t,2) . (GFA2AdderOutput am,bp,cm) = (Following s1,2) . (GFA2AdderOutput am,bp,cm) & (Following s1,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) ) by A4, A5, FACIRC_1:32, GFACIRC1:121;
hence (Following s,2) . (GFA2AdderOutput am,bp,cm) = (('not' a1) 'xor' a2) 'xor' ('not' a3) ; :: thesis: ( (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 )
A6: Following s,2 = Following (Following s) by FACIRC_1:15;
A7: ( am in InputVertices (BitFTA2Str am,bp,cm,dp,cin) & bp in InputVertices (BitFTA2Str am,bp,cm,dp,cin) & cm in InputVertices (BitFTA2Str am,bp,cm,dp,cin) & dp in InputVertices (BitFTA2Str am,bp,cm,dp,cin) & cin in InputVertices (BitFTA2Str am,bp,cm,dp,cin) ) by A1, ThFTA2S8;
then ( (Following s) . am = a1 & (Following s) . bp = a2 & (Following s) . cm = a3 & (Following s) . dp = a4 & (Following s) . cin = a5 ) by A2, CIRCUIT2:def 5;
hence ( (Following s,2) . am = a1 & (Following s,2) . bp = a2 & (Following s,2) . cm = a3 & (Following s,2) . dp = a4 & (Following s,2) . cin = a5 ) by A6, A7, CIRCUIT2:def 5; :: thesis: verum