Permuted Tabulation of Vanishing Determinants

size

12

permutation

b	a
c	d

	b d
a c

Determinants of size 2 square matrices modulo

m+1

are shown by combining

2

m

arrays. Each of these arrays has

m

rows and

m

columns for nonzero coefficients smaller than

m

. Select one of the

4!

permutations of the four coefficients to see the result of computing the corresponding determinants.