Definition of set theory in English:

set theory


  • [mass noun] The branch of mathematics which deals with the formal properties of sets as units (without regard to the nature of their individual constituents) and the expression of other branches of mathematics in terms of sets.

    • ‘In particular, she has attempted to reconcile poetry with set theory, a special branch of algebra.’
    • ‘Ernst Schröder's important work is in the area of algebra, set theory and logic.’
    • ‘In addition to his work on set theory, Cohen has worked on differential equations and harmonic analysis.’
    • ‘He therefore attempted to put set theory on an axiomatic basis to avoid the paradoxes.’
    • ‘This framework is probably a new development in logic and set theory.’