Recurrence and recurrent may refer to: *

Disease recurrence In internal medicine, relapse or recidivism is a recurrence of a past (typically medical) condition. For example, multiple sclerosis and malaria often exhibit peaks of activity and sometimes very long periods of dormancy, followed by relapse or r ...

, also called "relapse" *

Eternal recurrence Eternal return (german: Ewige Wiederkunft; also known as eternal recurrence) is a concept that the universe and all existence and energy has been recurring, and will continue to recur in a self similar form an infinite number of times across in ...

, the concept that the universe is perpetually recurring * Historic recurrence, the repetition of similar events in history *

Poincaré recurrence theorem In mathematics and physics, the Poincaré recurrence theorem states that certain dynamical systems will, after a sufficiently long but finite time, return to a state arbitrarily close to (for continuous state systems), or exactly the same as (for ...

, Henri Poincaré's theorem on dynamical systems * Radial recurrent artery – arising from the radial artery immediately below the elbow * Recursive definition * Recurrent neural network, a special artificial neural network * Recurrence period density entropy, an information-theoretic method for summarising the recurrence properties of dynamical systems * Recurrence plot, a statistical plot that shows a pattern that re-occurs * Recurrence relation, an equation which defines a sequence recursively * Recurrent rotation, a term used in contemporary hit radio for frequently aired songs *''Recurrence'' The Railway Children (band) album

See also