ELA, Volume 15, pp. 134-142, April 2006, abstract. On a Lyapunov Type Equation Related to Parabolic Spectral Dichotomy Mouhamad Al Sayed Ali and Miloud Sadkane A Lyapunov type equation characterizing the spectral dichotomy of a matrix by a parabola is proposed and analyzed. The results can be seen as the analogue of the classical Lyapunov stability theorems.