Correspondence may refer to: *In general usage, non-concurrent, remote communication between people, including

letter Letter, letters, or literature may refer to: Characters typeface * Letter (alphabet), a character representing one or more of the sounds used in speech; any of the symbols of an alphabet. * Letterform, the graphic form of a letter of the alphabe ...

s, email,

newsgroups A Usenet newsgroup is a repository usually within the Usenet system, for messages posted from users in different locations using the Internet. They are discussion groups and are not devoted to publishing news. Newsgroups are technically distinct ...

Internet forums An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are often longer than one line of text, and are at least temporar ...

blogs A blog (a truncation of "weblog") is a discussion or informational website published on the World Wide Web consisting of discrete, often informal diary-style text entries (posts). Posts are typically displayed in reverse chronological order s ...

Science

Correspondence principle In physics, the correspondence principle states that the behavior of systems described by the theory of quantum mechanics (or by the old quantum theory) reproduces classical physics in the limit of large quantum numbers. In other words, it says ...

(physics): quantum physics theories must agree with classical physics theories when applied to large quantum numbers * Correspondence principle (sociology), the relationship between social class and available education *

Correspondence problem The correspondence problem refers to the problem of ascertaining which parts of one image correspond to which parts of another image, where differences are due to movement of the camera, the elapse of time, and/or movement of objects in the photo ...

(computer vision), finding depth information in stereography *Regular sound correspondence (linguistics), see

Comparative method (linguistics) In linguistics, the comparative method is a technique for studying the development of languages by performing a feature-by-feature comparison of two or more languages with common descent from a shared ancestor and then extrapolating backwards t ...

Mathematics

Binary relation In mathematics, a binary relation associates elements of one set, called the ''domain'', with elements of another set, called the ''codomain''. A binary relation over sets and is a new set of ordered pairs consisting of elements in and i ...

** 1:1 correspondence, an older name for a

bijection In mathematics, a bijection, also known as a bijective function, one-to-one correspondence, or invertible function, is a function between the elements of two sets, where each element of one set is paired with exactly one element of the other ...

** Multivalued function * Correspondence (algebraic geometry), between two algebraic varieties *

Correspondence (category theory) In category theory, a branch of mathematics, profunctors are a generalization of relations and also of bimodules. Definition A profunctor (also named distributor by the French school and module by the Sydney school) \,\phi from a category C to ...

, the opposite of a profunctor *

Correspondence (von Neumann algebra) In mathematics, a von Neumann algebra or W*-algebra is a *-algebra of bounded operators on a Hilbert space that is closed in the weak operator topology and contains the identity operator. It is a special type of C*-algebra. Von Neumann algebra ...

or bimodule, a type of Hilbert space *

Correspondence analysis Correspondence analysis (CA) is a multivariate statistical technique proposed by Herman Otto Hartley (Hirschfeld) and later developed by Jean-Paul Benzécri. It is conceptually similar to principal component analysis, but applies to categorical ra ...

, a multivariate statistical technique

Philosophy and religion

Correspondence theory of truth In metaphysics and philosophy of language, the correspondence theory of truth states that the truth or falsity of a statement is determined only by how it relates to the world and whether it accurately describes (i.e., corresponds with) that world ...

, a theory in epistemology *

Correspondence (theology) Correspondence is a relationship between two levels of existence. The term was coined by the 18th-century theologian Emanuel Swedenborg in his '' Arcana Cœlestia'' (1749–1756), '' Heaven and Hell'' (1758) and other works. Swedenborg Definiti ...

, the relationship between spiritual and physical realities *

Table of magical correspondences A table of magical correspondences is a list of magical correspondences between items belonging to different categories, such as correspondences between certain deities, heavenly bodies, plants, perfumes, precious stones, etc. Such lists were co ...

, list of relations between various items used in ceremonial magic

Entertainment

Correspondence chess Correspondence chess is chess played by various forms of long-distance correspondence, traditionally through the postal system. Today it is usually played through a correspondence chess server, a public internet chess forum, or email. Less commo ...

played between different geographical locations *

Correspondence (album) ''Correspondence'' is the first full-length studio album by Peter Godwin. The album was released in 1983. Track listing All songs written by Peter Godwin; unless otherwise noted #"Baby's in the Mountains" - 4:14 #"The Art of Love" - 5:31 #"Win ...

, a 1983 studio album by singer and musician Peter Godwin *''

The Correspondence ''The Correspondence'' ( it, La corrispondenza) is an English-language Italian romantic film written and directed by Giuseppe Tornatore. It stars Jeremy Irons and Olga Kurylenko in lead roles, and was released on 14 January 2016. The film score ...

'', a 2016 film by Giuseppe Tornatore, featuring Jeremy Irons * ''Correspondences'' (Babbitt), a 1967 musical work by Milton Babbitt

Other uses

*Correspondence course, a

distant education Distance education, also known as distance learning, is the education of students who may not always be physically present at a school, or where the learner and the teacher are separated in both time and distance. Traditionally, this usually in ...

method

Science

Mathematics

Philosophy and religion

Entertainment

Other uses

See also