Regular may refer to:

Arts, entertainment, and media

Music

Other uses in arts, entertainment, and media

Language

Mathematics

Algebra and number theory

Analysis

Combinatorics, discrete math, and mathematical computer science

Geometry

Logic, set theory, and foundations

Probability and statistics

  • Regular conditional probability, a concept that has developed to overcome certain difficulties in formally defining conditional probabilities for continuous probability distributions
  • Regular stochastic matrix, a stochastic matrix such that all the entries of some power of the matrix are positive

Topology

  • Free regular set, a subset of a topological space that is acted upon disjointly under a given group action
  • Regular homotopy
  • Regular isotopy in knot theory, the equivalence relation of link diagrams that is generated by using the 2nd and 3rd Reidemeister moves only
  • Regular space (or ) space, a topological space in which a point and a closed set can be separated by neighborhoods

Organizations

People

Science and social science

  • Regular bowel movements, the opposite of constipation
  • Regular economy, an economy characterized by an excess demand function whose slope at any equilibrium price vector is non-zero
  • Regular moon, a natural satellite that has low eccentricity and a relatively close and prograde orbit
  • Regular solutions in chemistry, solutions that diverge from the behavior of an ideal solution only moderately

Other uses

  • Regular customer, a person who visits the same restaurant, pub, store, or transit provider frequently
  • Regular (footedness) in boardsports, a stance in which the left foot leads

See also

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