Category:Set theory

The words set theory can be used to mean a number of subtly different things in mathematics:

• Naive set theory is the original set theory developed by mathematicians at the end of the 19th century.
• Axiomatic set theory is a rigorous axiomatic theory developed in response to the discovery of serious flaws (such as Russell's Paradox) in naive set theory.
• Internal set theory is an axiomatic extension of set theory that supports a logically consistent identification of illimited (enormously large) and infinitesimal elements within the Real numbers.
• Various versions of logic have associated sorts of sets (such as fuzzy sets in fuzzy logic).

Subcategories

C

• Cardinal numbers

Articles in category "Set theory"