Some of the things I've learned every day since Oct 10, 2016
9: Unimodular Matrices
October 19, 2016Posted by on
A unimodular matrix is a square integer matrix with determinant .
A unimodular matrix has an inverse which is itself unimodular. Furthermore, since the identity matrix as well as the product of any 2 unimodular matrices are all unimodular, the set of unimodular matrices forms a group under multiplication, denoted .