CIRCUITS SYSTEMS AND SIGNAL PROCESSING, cilt.38, sa.3, ss.1385-1395, 2019 (SCI-Expanded, Scopus)
It is proven that the transitivity property of commutativity is always valid for second-order linear time-varying analog systems whether their initial states are zero or not. Throughout the study, it is assumed that the subsystems considered cannot be obtained from each other by any feed-forward and feedback structure. The results are well validated by MATLAB simulations.