Definition of group theory in English:

group theory


  • 1Mathematics and Science. The branch of algebra concerned with the properties and applications of groups.

  • 2Sociology. Any of various theories concerned with the dynamics within or between social groups, or with the influence of social groups on people's thinking or behaviour.


Late 19th century. From group + theory, in sense 1 after German Gruppentheorie.


group theory

/ˈɡruːp ˌθɪəri/