Similar to 上極限と下極限

List of alternative set theories

Set theory

Non-well-founded set theory

Template:Set theory

Extension (semantics)

Intension

Set (mathematics)

Aronszajn tree

Hereditarily finite set

Universe (mathematics)

Euler diagram

Ω-logic

Interesting number paradox

Enumeration

Connected relation

Cantor set

Cantor's diagonal argument

Cantor's theorem

Cardinal number

Computable set

Inverse function

Cofinality

Admissible ordinal

Empty function

Empty set

Goodstein's theorem