// Workers AI · dad joke modeWhat did correspondence say to the mailman? You've got a letter of introduction.

Correspondence may refer to:

In general usage, non-concurrent, remote communication between people, including letters, email, newsgroups, Internet forums, blogs.

Science

Correspondence principle (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 (computer vision), finding depth information in stereography
Regular sound correspondence (linguistics), see Comparative method (linguistics)

Binary relation
- Mathematical correspondence, a more general term than bijection
Set-valued function, for a correspondence as a function representing a set.
Correspondence (algebraic geometry), between two algebraic varieties
Corresponding sides and corresponding angles, between two polygons
Correspondence (category theory), the opposite of a profunctor
Correspondence (von Neumann algebra) or bimodule, a type of Hilbert space
Correspondence analysis, a multivariate statistical technique

Correspondence theory of truth, a theory in epistemology
Correspondence (theology), the relationship between spiritual and physical realities
Table of magical correspondences, list of relations between various items used in ceremonial magic

Correspondence chess played between different geographical locations
Correspondence (album), a 1983 studio album by singer and musician Peter Godwin
The Correspondence, a 2016 film by Giuseppe Tornatore, featuring Jeremy Irons
Correspondences (Babbitt), a 1967 musical work by Milton Babbitt