for v, v1 being object
for V, A being set st v in V & v <> v1 holds
for d1 being NonatomicND of V,A
for d2 being TypeSCNominativeData of V,A st v1 in dom d1 & not d1 in A & not naming (V,A,v,d2) in A holds
(local_overlapping (V,A,d1,d2,v)) . v1 = d1 . v1