let a, b be FinSequence; for c being set st c = [<*>,((0 -tuples_on BOOLEAN) --> FALSE)] holds
( 1 -BitAdderStr (a,b) = (1GateCircStr (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowStr ((a . 1),(b . 1),c)) & 1 -BitAdderCirc (a,b) = (1GateCircuit (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowCirc ((a . 1),(b . 1),c)) & 1 -BitMajorityOutput (a,b) = MajorityOutput ((a . 1),(b . 1),c) )
let c be set ; ( c = [<*>,((0 -tuples_on BOOLEAN) --> FALSE)] implies ( 1 -BitAdderStr (a,b) = (1GateCircStr (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowStr ((a . 1),(b . 1),c)) & 1 -BitAdderCirc (a,b) = (1GateCircuit (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowCirc ((a . 1),(b . 1),c)) & 1 -BitMajorityOutput (a,b) = MajorityOutput ((a . 1),(b . 1),c) ) )
assume A1:
c = [<*>,((0 -tuples_on BOOLEAN) --> FALSE)]
; ( 1 -BitAdderStr (a,b) = (1GateCircStr (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowStr ((a . 1),(b . 1),c)) & 1 -BitAdderCirc (a,b) = (1GateCircuit (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowCirc ((a . 1),(b . 1),c)) & 1 -BitMajorityOutput (a,b) = MajorityOutput ((a . 1),(b . 1),c) )
consider f, g, h being ManySortedSet of NAT such that
A2:
1 -BitAdderStr (a,b) = f . 1
and
A3:
1 -BitAdderCirc (a,b) = g . 1
and
A4:
f . 0 = 1GateCircStr (<*>,((0 -tuples_on BOOLEAN) --> FALSE))
and
A5:
g . 0 = 1GateCircuit (<*>,((0 -tuples_on BOOLEAN) --> FALSE))
and
A6:
h . 0 = c
and
A7:
for n being Nat
for S being non empty ManySortedSign
for A being non-empty MSAlgebra over S
for z being set st S = f . n & A = g . n & z = h . n holds
( f . (n + 1) = S +* (BitAdderWithOverflowStr ((a . (n + 1)),(b . (n + 1)),z)) & g . (n + 1) = A +* (BitAdderWithOverflowCirc ((a . (n + 1)),(b . (n + 1)),z)) & h . (n + 1) = MajorityOutput ((a . (n + 1)),(b . (n + 1)),z) )
by A1, Def4;
1 -BitMajorityOutput (a,b) = h . (0 + 1)
by A1, A4, A5, A6, A7, Th6;
hence
( 1 -BitAdderStr (a,b) = (1GateCircStr (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowStr ((a . 1),(b . 1),c)) & 1 -BitAdderCirc (a,b) = (1GateCircuit (<*>,((0 -tuples_on BOOLEAN) --> FALSE))) +* (BitAdderWithOverflowCirc ((a . 1),(b . 1),c)) & 1 -BitMajorityOutput (a,b) = MajorityOutput ((a . 1),(b . 1),c) )
by A2, A3, A4, A5, A6, A7; verum