Similar to リシャールのパラドックス

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List of alternative set theories

Set theory

Non-well-founded set theory

Template:Set theory

Extension (semantics)

Intension

Set (mathematics)

Hereditarily finite set

Universe (mathematics)

Enumeration

Support (mathematics)

Connected relation

Cardinal number

Computable set

Inverse function

Cofinality

Admissible ordinal

Empty function

Empty set

Class (set theory)

Club set

Kurepa tree