  This article is based upon previous work by Sousa Ramos and his
collaborators. They first prove that the existence of only one orbit associated
with the Collatz conjecture is equivalent to the determinant of each matrix of
a certain sequence of matrices to have the same value. These matrices are
called Collatz matrices. The second step in their work would be to calculate
this determinant for each of the Collatz matrices. Having calculated this
determinant for the first few terms of the sequence of matrices, their plan was
to prove the determinant of the current term equals the determinant of the
previous one. Unfortunately, they could not prove it for the cases where the
dimensions of the matrices are 26+54l or 44+54l, where l is a positive integer.
In the current article we improve on these results.
