empty matrix has denominator 1
empty matrix has denominator 1

fredrik-johansson/flint2,fredrik-johansson/flint2,wbhart/flint2,dsroche/flint2,dsroche/flint2,fredrik-johansson/flint2,dsroche/flint2,wbhart/flint2,wbhart/flint2,dsroche/flint2