let s be State of SCM+FSA; :: thesis: for f being FinSeq-Location
for I being InitHalting keepInt0_1 Program of SCM+FSA
for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let f be FinSeq-Location ; :: thesis: for I being InitHalting keepInt0_1 Program of SCM+FSA
for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let I be InitHalting keepInt0_1 Program of SCM+FSA; :: thesis: for J being InitHalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let J be InitHalting Program of SCM+FSA; :: thesis: (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
( IExec ((I ';' J),s) = (IExec (J,(IExec (I,s)))) +* (Start-At (((IC (IExec (J,(IExec (I,s))))) + (card I)),SCM+FSA)) & not f in dom (Start-At (((IC (IExec (J,(IExec (I,s))))) + (card I)),SCM+FSA)) ) by Th29, SCMFSA6B:10;
hence (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f by FUNCT_4:12; :: thesis: verum