constructible hierarchy

GPTKB entity

Statements (23)
Predicate Object
gptkbp:instanceOf gptkb:mathematical_concept
gptkbp:alsoKnownAs L hierarchy
gptkbp:assumes gptkb:axiom_of_regularity
gptkbp:builtBy transfinite recursion
gptkbp:contrastsWith gptkb:Von_Neumann_universe
gptkbp:describedBy Gödel's 1938 paper
gptkbp:heldBy a cumulative hierarchy of sets
https://www.w3.org/2000/01/rdf-schema#label constructible hierarchy
gptkbp:importantFor gptkb:descriptive_set_theory
inner model theory
gptkbp:introduced gptkb:Kurt_Gödel
gptkbp:levelLimit union of all previous levels
gptkbp:levelSuccessor definable subsets of previous level
gptkbp:levelZero empty set
gptkbp:notation L_alpha
gptkbp:relatedTo gptkb:set_theory
gptkb:constructible_universe
axiom of constructibility
gptkbp:unionOfAllLevels L
gptkbp:usedIn proof of consistency of the generalized continuum hypothesis
proof of consistency of the axiom of choice
gptkbp:bfsParent gptkb:Gödel's_constructible_universe
gptkbp:bfsLayer 7