@ARTICLE{Czornik_Adam_A_2023, author={Czornik, Adam and Simek, Krzysztof}, volume={vol. 33}, number={No 2}, journal={Archives of Control Sciences}, pages={413-424}, howpublished={online}, year={2023}, publisher={Committee of Automatic Control and Robotics PAS}, abstract={In this note, a formula for the lower Bohl exponent of a discrete system with variable coefficients and weak variation was proved. This formula expresses the Bohl exponent through the eigenvalues of the coefficient matrix. Based on these formulas a necessary and sufficient condition for an uniform exponential instability of such systems is also presented.}, type={Article}, title={A formula for the lower Bohl exponent of discrete time-varying systems}, URL={http://sd.czasopisma.pan.pl/Content/127710/PDF-MASTER/art07_int.pdf}, doi={10.24425/acs.2023.146282}, keywords={time-varying systems, asymptotic stability, Bohl exponent}, }