MultidimensionalMatrix == MultidimensionalMatrix -- equality of two multidimensional matrices

i1 : M = multidimensionalMatrix {{7, 6}, {9, 3}, {1, 7}}

o1 = {{7, 6}, {9, 3}, {1, 7}}

o1 : 2-dimensional matrix of shape 3 x 2 over ZZ

i2 : N = multidimensionalMatrix {{7, 6}, {9, 4}, {1, 7}}

o2 = {{7, 6}, {9, 4}, {1, 7}}

o2 : 2-dimensional matrix of shape 3 x 2 over ZZ

i3 : N' = multidimensionalMatrix {{7, 6}, {9, 3}, {1, 7}}

o3 = {{7, 6}, {9, 3}, {1, 7}}

o3 : 2-dimensional matrix of shape 3 x 2 over ZZ

i4 : M == N

o4 = false

i5 : M == N'

o5 = true

i6 : M - N' == 0

o6 = true