4 ms·0 = -N mod N and N-1 = -1 mod N The consistency is that if i < 0 and l[i] exists then l[i] = l[i+N]by afiori 3y ago0 = -N mod N and N-1 = -1 mod N The consistency is that if i < 0 and l[i] exists then l[i] = l[i+N]