# Separation

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**Separation** may refer to:

## Films

- [*Separation* (1967 film)](/source/Separation_(1967_film)), a British feature film written by and starring Jane Arden and directed by Jack Bond
- *[La Séparation](/source/La_S%C3%A9paration)*, 1994 French film
- *[A Separation](/source/A_Separation)*, 2011 Iranian film
- [*Separation* (2013 film)](/source/Separation_(2013_film)), an American thriller film starring Sarah Manninen
- [*Separation* (2021 film)](/source/Separation_(2021_film)), an American horror film

## Literature

- [*A Separation* (novel)](/source/A_Separation_(novel)), a 2017 novel by Katie Kitamura
- *Separation*, a 1976 Canadian political novel by [Richard Rohmer](/source/Richard_Rohmer)
- [*The Separation* (Applegate novel)](/source/The_Separation_(Applegate_novel)), a 1999 novel in the *Animorphs* series by K.A. Applegate
- [*The Separation* (Bury Novel)](/source/The_Separation_(Bury_novel)), an 1830 novel by Lady Charlotte Bury
- [*The Separation* (Priest novel)](/source/The_Separation_(Priest_novel)), a 2002 novel by Christopher Priest

## Music

- *Separation*, a 2011 album by [Balance and Composure](/source/Balance_and_Composure)
- [*Separation* (EP)](/source/Separation_(EP)), a 2006 EP by Halou
- [*Separations* (album)](/source/Separations_(album)), a 1992 album by British alternative rock band Pulp
- [Separation mastering](/source/Separation_mastering), in music recording

## Law and politics

- [Marital separation](/source/Marital_separation), when a married couple ceases living together without a divorce - [Legal separation](/source/Legal_separation), a legal status where married couples may disentangle their finances without divorce
- [Nonconformity to the world](/source/Nonconformity_to_the_world) (separation from the world), a belief among some Protestant religious groups that the members of a church should be separate from "the world"
- Political separation ([separatism](/source/Separatism)), advocacy of a state of cultural, ethnic, tribal, religious, racial, governmental or gender separation from the larger group
- [Separation of church and state](/source/Separation_of_church_and_state), the idea that religion and government functions should be separate

## Mathematics and science

- [Separation (behavior)](/source/Separation_(behavior)), the behavior of flocking animals to stand off from their neighbours
- [Separation (statistics)](/source/Separation_(statistics)), a problem encountered in fitting models for categorical outcomes
- [Flow separation](/source/Flow_separation), separation of a fluid boundary layer from the surface of a solid body moving relative to the fluid
- [Intertemporal portfolio choice#Time-independent decisions](/source/Intertemporal_portfolio_choice#Time-independent_decisions), where in some contexts portfolio choices for many periods can be made separately
- [Separated sets](/source/Separated_sets), related concept in topology, two sets disjoint from the other's closure
- [Separation axiom](/source/Separation_axiom), concepts in the area of mathematics called topology
- [Separation of concerns](/source/Separation_of_concerns), in computer science (and problem-solving in general)
- [Separation of variables](/source/Separation_of_variables), in mathematics to solve certain (separable) differential equations
- [Separation principle](/source/Separation_principle), in control theory
- [Separation process](/source/Separation_process), in chemistry
- [Separation theorem (disambiguation)](/source/Separation_theorem_(disambiguation)): several different theorems related to separation, in different scientific disciplines, for example: - [Mutual fund separation theorem](/source/Mutual_fund_separation_theorem), allowing a portfolio optimization problem to be separated into smaller problems
- [Point-pair separation](/source/Point-pair_separation), in an order two pairs of points may or may not separate each other

## Other uses

- [Separation (aeronautics)](/source/Separation_(aeronautics)), rules to minimise the risk of collision between aircraft in flight
- [Separation (United States military)](/source/Separation_(United_States_military)), the process by which a service member leaves active duty
- [Separation anxiety disorder](/source/Separation_anxiety_disorder), an anxiety disorder in which an individual experiences excessive anxiety regarding separation from home and/or from people to whom the individual has a strong emotional attachment
- [Racial separation](/source/Racial_separation), the separation of different racial groups in daily life
- [Six degrees of separation](/source/Six_degrees_of_separation), the idea that everyone is on average approximately six steps away, by way of introduction, from any other person on earth
- [Curdling](/source/Curdling) of an emulsion in cookery is called "separation"
- [Cow-calf separation](/source/Cow-calf_separation), practice of separating calves and mothers in the dairy industry

## See also

- [Divide (disambiguation)](/source/Divide_(disambiguation))
- [Fragmentation (disambiguation)](/source/Fragmentation_(disambiguation))
- [Part (disambiguation)](/source/Part_(disambiguation))
- [Segregation (disambiguation)](/source/Segregation_(disambiguation))
- [Separate (disambiguation)](/source/Separate_(disambiguation))
- [Split (disambiguation)](/source/Split_(disambiguation))

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Adapted from the Wikipedia article [Separation](https://en.wikipedia.org/wiki/Separation) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Separation?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.