Normal form of m-by-n-by-2 matrices for equivalence

We give a canonical form of m-by-2-by-2 spatial matrices for equivalence over any field.Comment: 15 page

Canonical form of m-by-2-by-2 matrices over a field of characteristic other than two

We give a canonical form of m-by-2-by-2 matrices for equivalence over any field of characteristic not two.Comment: 6 page