0411100 20240103182301.820060210235959.9 6 s. cav_un_epca*02567210018-9286487 (2003)1269-1274Institute of Electrical and Electronics Engineers contractibility dynamic controllers LTI systems cav_un_auth*0101062 Bakule Lubomír UTIA-B Department of Adaptive Systems Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0021065 Rodellar J. ES cav_un_auth*0021066 Rossell J. M. ES 09I IAA2075802 GA AV ČR cav_un_auth*0012934 CEZ:AV0Z1075907 Necessary and sufficient conditions for contractibility are proved in terms of both unstructured and block structured complementary matrices for general expansion/contraction transformation matrices. Explicit sufficient conditions for blocks of complementary matrices ensuring contractibility are proved for general expansion/contraction transformation matrices. Moreover, these conditions are further specialized for a particular class of transformation matrices. BC AS http://hdl.handle.net/11104/0131187 UTIA-B 20030087 2003 cav_un_epca*0256721 IEEE Transactions on Automatic Control 0018-9286 1558-2523 Roč. 48 č. 7 2003 1269 1274 Institute of Electrical and Electronics Engineers