Representation may refer to:

Law and politics

Representation (politics) Political representation is the activity of making citizens "present" in public policy-making processes when political actors act in the best interest of citizens. This definition of political representation is consistent with a wide variety of vie ...

, political activities undertaken by elected representatives, as well as other theories **

Representative democracy Representative democracy, also known as indirect democracy, is a type of democracy where elected people represent a group of people, in contrast to direct democracy. Nearly all modern Western-style democracies function as some type of represe ...

, type of democracy in which elected officials represent a group of people * Representation, in contract law a pre-contractual statement that may (if untrue) result in liability for misrepresentation * Labor representation, or worker representation, the work of a

union representative A union representative, union steward, or shop steward is an employee of an organization or company who represents and defends the interests of their fellow employees as a labor union member and official. Rank-and-file members of the union hold ...

who represents and defends the interests of fellow labor union members * Legal representation, provided by a barrister, lawyer, or other

advocate An advocate is a professional in the field of law. Different countries' legal systems use the term with somewhat differing meanings. The broad equivalent in many English law–based jurisdictions could be a barrister or a solicitor. However ...

Lobbying In politics, lobbying, persuasion or interest representation is the act of lawfully attempting to influence the actions, policies, or decisions of government officials, most often legislators or members of regulatory agencies. Lobbying, whic ...

or interest representation, attempts to influence the actions, policies, or decisions of officials * " No taxation without representation", a 1700s slogan that summarized one of the American colonists' 27 colonial grievances in the Thirteen Colonies, which was one of the major causes of the American Revolution * Permanent representation, a type of

diplomatic mission A diplomatic mission or foreign mission is a group of people from a state or organization present in another state to represent the sending state or organization officially in the receiving or host state. In practice, the phrase usually den ...

Arts, entertainment, and media

Representation (arts) Representation is the use of signs that stand in for and take the place of something else.Mitchell, W. 1995, "Representation", in F Lentricchia & T McLaughlin (eds), ''Critical Terms for Literary Study'', 2nd edn, University of Chicago Press, Chica ...

, use of signs that stand in for and take the place of something else * ''Representation'' (journal), an academic journal covering representative democracy *

Depiction Depiction is reference conveyed through pictures. A picture refers to its object through a non-linguistic two-dimensional scheme, and is distinct from writing or notation. A depictive two-dimensional scheme is called a picture plane and may be cons ...

, non-verbal representation through two-dimensional images (pictures) of things seen, remembered or imagined

Cognitive science

* Representation (psychology), a hypothetical 'internal' cognitive symbol that represents external reality *

Knowledge representation Knowledge representation and reasoning (KRR, KR&R, KR²) is the field of artificial intelligence (AI) dedicated to representing information about the world in a form that a computer system can use to solve complex tasks such as diagnosing a medic ...

, the study of formal ways to describe knowledge *

Representation theory (linguistics) Representation theory (RT) is a theoretical linguistic framework in the generative tradition, created and developed by Edwin S. Williams – chiefly in an eponymous monograph of 2003. Williams compares it with other frameworks such as Noam Choms ...

, a theoretical framework in generative linguistics

Mathematics

Representation (mathematics) In mathematics, a representation is a very general relationship that expresses similarities (or equivalences) between mathematical objects or structures. Roughly speaking, a collection ''Y'' of mathematical objects may be said to ''represent'' ano ...

, a very general relationship that expresses similarities between objects *

Group representation In the mathematical field of representation theory, group representations describe abstract groups in terms of bijective linear transformations of a vector space to itself (i.e. vector space automorphisms); in particular, they can be used ...

, describes abstract groups in terms of linear transformations of vector spaces *

Lie algebra representation In the mathematical field of representation theory, a Lie algebra representation or representation of a Lie algebra is a way of writing a Lie algebra as a set of matrices (or endomorphisms of a vector space) in such a way that the Lie bracket ...

, a way of writing a Lie algebra as a set of matrices in such a way that the Lie bracket is given by the commutator *

Multiple representations (mathematics education) In mathematics education, a representation is a way of encoding an idea or a relationship, and can be both internal (e.g., mental construct) and external (e.g., graph). Thus multiple representations are ways to symbolize, to describe and to refer to ...

, ways to symbolize, to describe and to refer to the same mathematical entity *

Representation of a Lie group In mathematics and theoretical physics, a representation of a Lie group is a linear action of a Lie group on a vector space. Equivalently, a representation is a smooth homomorphism of the group into the group of invertible operators on the ve ...

, a linear action of a Lie group on a vector space

Other uses

Representation (chemistry) The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are possibly arranged in the real three-dimensional space. The chemical bon ...

, graphic representation of the molecular structure of a chemical compound *

Social representation Social representations are a system of values, ideas, metaphors, beliefs, and practices that serve to establish social order, orient participants and enable communication among the members of groups and communities. Social representation theory is ...

, a stock of values, ideas, beliefs, and practices that are shared among the members of groups and communities *

Representative sample In statistics, quality assurance, and survey methodology, sampling is the selection of a subset (a statistical sample) of individuals from within a statistical population to estimate characteristics of the whole population. Statisticians attem ...

in statistics

Law and politics

Arts, entertainment, and media

Cognitive science

Mathematics

Other uses

See also