set theory

Definition

The mathematical theory of sets.

Example Sentences

• "We mentioned previously that certain paradoxes in set theory arose shortly after Cantor's works were published."
• "The above argument, known as Russell's Paradox, was discovered by Bertrand Russell in 1901. Set theory itself began a few decades earlier with the work of George Cantor."
• "The serious study of models of axiomatic set theories depends heavily on methods from mathematical logic which are outside the scope of these Notes."