
theorem
  for i1, i2, i3, i4 being Integer, il being Element of NAT,
 s being il-started State-consisting of <%i1,i2,i3,i4%>
holds
  s.dl.0 = i1 & s.dl.1 = i2 & s.dl.2 = i3 & s.dl.3 = i4
proof
  let i1, i2, i3, i4 be Integer, il be Element of NAT,
   s be il-started State-consisting of <%i1,i2,i3,i4%>;
  set D = <%i1,i2,i3,i4%>;
A1: D.2 = i3 & D.3 = i4;
A2: len D = 4 & 0+0=0 by AFINSQ_1:84;
  D.0 = i1 & D.1 = i2;
  hence thesis by A1,A2,Def1;
end;
