Correspondence

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)

Mathematics

 * Binary relation
 * 1:1 correspondence, an older name for a bijection
 * Multivalued function
 * 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

Philosophy and religion

 * 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

Entertainment

 * 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

Other uses

 * Correspondence course, a distant education method