: This recurring number is often interpreted as a symbol for the character Trinity [37]. 5. Critical Archives & Further Reading

1999 is prime. This simplifies many computations when 1999 appears as an invariant factor or determinant:

The relentless program designed to eliminate human "anomalies."

For an n×n integer matrix A, the index (also called the Smith–Minkowski–Smith index or simply index) of A often refers to the index of the subgroup generated by its column (or row) vectors inside Z^n: index(A) = [Z^n : im(A)]. Equivalently, if A has full integer rank n, index(A) = |det(A)|. If rank r < n, the index is infinite; instead one studies the absolute value of the product of the nonzero invariant factors (the determinant of any r×r maximal-rank minor), or the finite index of im(A) inside its saturation.