let a be Int_position ; for i being Integer
for n, m being Element of NAT
for I being Program of SCMPDS holds
( m < (card I) + 3 iff m in dom (for-up (a,i,n,I)) )
let i be Integer; for n, m being Element of NAT
for I being Program of SCMPDS holds
( m < (card I) + 3 iff m in dom (for-up (a,i,n,I)) )
let n, m be Element of NAT ; for I being Program of SCMPDS holds
( m < (card I) + 3 iff m in dom (for-up (a,i,n,I)) )
let I be Program of SCMPDS; ( m < (card I) + 3 iff m in dom (for-up (a,i,n,I)) )
card (for-up (a,i,n,I)) = (card I) + 3
by Th51;
hence
( m < (card I) + 3 iff m in dom (for-up (a,i,n,I)) )
by AFINSQ_1:66; verum