Implication details
Claim: If a category has countable powers, then it has finite powers.
Proof: This is trivial.
This implication has a dual.
Show 20 categories using this implication
- empty category
- discrete category on two objects
- delooping of the additive monoid of ordinal numbers
- category of sets equipped with an irreflexive binary relation
- category of sets equipped with a symmetric irreflexive binary relation
- category of finite sets and injections
- category of finite sets of even cardinality
- category of fields
- category of fields of characteristic zero
- partially ordered set of natural numbers
- partially ordered collection of ordinal numbers
- category of partially ordered sets without isolated points
- category of sets and bijections
- discrete category of sets
- category of large families of sets and bijections
- category of large families of sets which are mostly empty
- category of sets with finite-to-one maps
- cocompletion of a discrete–pair join
- walking fork
- walking span