let i1, i2 be Integer; for s being State-consisting of 0 , 0 , 0 ,<%((dl. 0 ) >0_goto 1)%> ^ <%(halt SCM )%>,<*i1*> ^ <*i2*> holds
( ProgramPart s halts_on s & LifeSpan (ProgramPart s),s = 1 & ( for d being Data-Location holds (Result (ProgramPart s),s) . d = s . d ) )
let s be State-consisting of 0 , 0 , 0 ,<%((dl. 0 ) >0_goto 1)%> ^ <%(halt SCM )%>,<*i1*> ^ <*i2*>; ( ProgramPart s halts_on s & LifeSpan (ProgramPart s),s = 1 & ( for d being Data-Location holds (Result (ProgramPart s),s) . d = s . d ) )
set s1 = Comput (ProgramPart s),s,(0 + 1);
A1:
s . 0 = (dl. 0 ) >0_goto 1
by Th15;
A2:
s . 1 = halt SCM
by Th15;
A3:
( IC s = 0 & s = Comput (ProgramPart s),s,0 )
by Th15, AMI_1:13;
s . (dl. 0 ) = i1
by Th15;
then A4:
IC (Comput (ProgramPart s),s,(0 + 1)) = 0 + 1
by A1, A3, Th25;
hence
ProgramPart s halts_on s
by A2, Th3; ( LifeSpan (ProgramPart s),s = 1 & ( for d being Data-Location holds (Result (ProgramPart s),s) . d = s . d ) )
thus
LifeSpan (ProgramPart s),s = 1
by A2, A3, A4, Th17; for d being Data-Location holds (Result (ProgramPart s),s) . d = s . d
let d be Data-Location ; (Result (ProgramPart s),s) . d = s . d
thus (Result (ProgramPart s),s) . d =
(Comput (ProgramPart s),s,(0 + 1)) . d
by A2, A4, Th4
.=
s . d
by A1, A3, Th25
; verum