Statements (21)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
countable ordinal |
| gptkbp:cardinality |
ℵ₀
|
| gptkbp:describedBy |
effective descriptive set theory
|
| gptkbp:field |
gptkb:logic
recursion theory |
| gptkbp:greaterThanAll |
recursive ordinals
|
| gptkbp:heldBy |
the smallest non-recursive ordinal
the supremum of all computable ordinals |
| https://www.w3.org/2000/01/rdf-schema#label |
Church–Kleene ordinal
|
| gptkbp:isCountable |
true
|
| gptkbp:isLimitOrdinal |
true
|
| gptkbp:isNotComputable |
true
|
| gptkbp:isNotRecursive |
true
|
| gptkbp:isSupremumOf |
computable ordinals
|
| gptkbp:namedAfter |
gptkb:Alonzo_Church
gptkb:Stephen_Cole_Kleene |
| gptkbp:notation |
ω₁^{CK}
|
| gptkbp:symbol |
ω₁^{CK}
|
| gptkbp:bfsParent |
gptkb:Kleene's_O
|
| gptkbp:bfsLayer |
6
|