And there is no originality in it; only endless permutations and combinations of doctrines already known and accepted.
Every unit of the rth species which does not vanish is the product of r different units of the first species; two such units are independent unless they are permutations of the same set of primary units e i, in which case they are equal or opposite according to the usual rule employed in determinants.
Permutations and Combinations.
In particular, the number of permutations of the whole stock is n!.
Y ...a n v, the summation being for all permutations of the n numbers, is called the determinant of the n 2 quantities.