Similar to 空関数

Constant function

Euler diagram

Cofinality

Admissible ordinal

Kurepa tree

Von Neumann cardinal assignment

Diagonal intersection

List of alternative set theories

Hartogs number

Non-well-founded set theory

Mereology

Finite intersection property

List of statements independent of ZFC

Ω-logic

Aronszajn tree

Bijection

Injective function

Sunflower (mathematics)

Grundzüge der Mengenlehre

List of mathematical functions

Concave function

Basis function

Coercive function

Even and odd functions

Continuous functions on a compact Hausdorff space

Elementary function

Monotonic function