399Glossary
initial conditions) exhibit the phenomenon known as chaos. Such
chaotic behavior is, in fact, deterministic. However, its occurrence
may at rst appear random. Under appropriate conditions, a chaotic
CNLS may exhibit periodic LC oscillations in its states or unbounded
responses. Certain chaotic CNLSs can exhibit tipping-point behavior
where a combination of initial conditions and/or inputs can trigger
an abrupt transition from nonoscillatory, SS behavior to LCs, and
vice versa. CSs exist on a spectrum ranging from equilibrium to
complete chaos. A system in equilibrium does not have the inter-
nal dynamics to enable it to respond to changes in its environment
and will die (or is not alive, e.g., viruses, ...