Editing Queueing theory (section)

=== Fluid limits ===
{{main|Fluid limit}}
Fluid models are continuous deterministic analogs of queueing networks obtained by taking the limit when the process is scaled in time and space, allowing heterogeneous objects. This scaled trajectory converges to a deterministic equation which allows the stability of the system to be proven. It is known that a queueing network can be stable but have an unstable fluid limit.<ref>{{Cite journal | last1 = Bramson | first1 = M. | title = A stable queueing network with unstable fluid model | doi = 10.1214/aoap/1029962815 | journal = The Annals of Applied Probability | volume = 9 | issue = 3 | pages = 818–853 | year = 1999 | jstor = 2667284| doi-access = free }}</ref>