A note on the stability of linear discrete systems and lyapunov method

In a publication by Y. P. Harn and C. T. Chen [1] a proof of a discrete stability test by using the Lyapunov method was given. In this note the main results obtained by the author in this direction in 1965 [6], [7] and the extensions and applications obtained partially with other authors since then and published in different journals [8]-[10] are surveyed. The similarity to the results in [1] is obvious.