Rump, Siegfried M.Siegfried M.Rump2021-02-182021-02-182001-10-01IEEE Transactions on Automatic Control 46 (10): 1605-1608 (2001-10-01)http://hdl.handle.net/11420/8839In the collection of open problems in mathematical systems and control theory [1], Megretski poses a problem related to the degree of conservativism of the well-known circle criterion follows. We solve this problem.en1558-2523IEEE transactions on automatic control20011016051608Institute of Electrical and Electronics EngineersCircle criterionCycle productPerron-Frobenius theorySign-real spectral radiusInformatikTechnikConservatism of the circle criterion-solution of a problem posed by A. MegretskiJournal Article10.1109/9.956057Other