let N be with_zero set ; for T being non empty with_non-empty_values IC-Ins-separated weakly_standard AMI-Struct over N
for l1, l2 being Element of NAT holds
( locnum (l1,T) <= locnum (l2,T) iff l1 <= l2,T )
let T be non empty with_non-empty_values IC-Ins-separated weakly_standard AMI-Struct over N; for l1, l2 being Element of NAT holds
( locnum (l1,T) <= locnum (l2,T) iff l1 <= l2,T )
let l1, l2 be Element of NAT ; ( locnum (l1,T) <= locnum (l2,T) iff l1 <= l2,T )
( il. (T,(locnum (l1,T))) = l1 & il. (T,(locnum (l2,T))) = l2 )
by Def5;
hence
( locnum (l1,T) <= locnum (l2,T) iff l1 <= l2,T )
by Th8; verum