:: deftheorem Def13 defines unique-halt AMI_WSTD:def 13 :
for N being with_zero set
for S being non empty with_non-empty_values IC-Ins-separated halting weakly_standard AMI-Struct over N
for F being NAT -defined the InstructionsF of b₂ -valued non empty finite Function holds
( F is unique-halt iff for f being Element of NAT st F . f = halt S & f in dom F holds
f = LastLoc F );