E-mail: dosly@math.muni.cz
Abstract. The survey of the basic results of oscillation theory of various linear differential equations and systems is presented. It is shown that the discrete oscillation theory is in many aspects very similar to its continuous counterpart. Some open problem are discussed.
AMSclassification. 39A10
Keywords. Discrete oscillation theory, Sturm-Liouville difference equation, Riccati equation, variational principle, symplectic system.