ORDINARY DIFFERENTIAL EQUATIONS AND DYNAMICAL SYSTEMS
https://homepages.rpi.edu/~kovacg/classes/undergradode/440.htmlHigher order equations and systems: Higher-order equations and nXn systems, linear equations, Wronskians and Liouville's theorem, higher-order linear equations and systems with constant coefficients, the exponential of a matrix, phase portraits, stable, unstable and center subspaces, multiple roots, Jordan normal form, inhomogeneous systems, method of undetermined …
Floquet theory - Wikipedia
en.wikipedia.org › wiki › Floquet_theoryOrdinary Differential Equations and Dynamical Systems. Providence: American Mathematical Society. ISBN 978-0-8218-8328-0. M.S.P. Eastham, "The Spectral Theory of Periodic Differential Equations", Texts in Mathematics, Scottish Academic Press, Edinburgh, 1973. ISBN 978-0-7011-1936-2. External links