let S be standard-ins homogeneous regular J/A-independent COM-Struct ; for I, J being Program of S holds dom I misses dom (Reloc (J,(card I)))
let I, J be Program of S; dom I misses dom (Reloc (J,(card I)))
assume A1:
dom I meets dom (Reloc (J,(card I)))
; contradiction
dom (Reloc (J,(card I))) =
dom (Shift (J,(card I)))
by Def40
.=
{ (l + (card I)) where l is Element of NAT : l in dom J }
by VALUED_1:def 12
;
then consider x being set such that
A2:
x in dom I
and
A3:
x in { (l + (card I)) where l is Element of NAT : l in dom J }
by A1, XBOOLE_0:3;
consider l being Element of NAT such that
A4:
x = l + (card I)
and
l in dom J
by A3;
l + (card I) < card I
by A2, A4, AFINSQ_1:66;
hence
contradiction
by NAT_1:11; verum