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Large-Cardinal Catalogue

This is a comprehensive map of the infinite, ranked by size and "consistency strength," going from the smallest infinite sets to the absolute largest limits of mathematical thought.

  • ω, the smallest infinity
  • Hilbert's hotel and other toys in the playroom
  • The small countable ordinals, such as ω, ω+1, …, ω·2, …, ω², …, ω^ω, …, ω^ω^ω, … up to ε₀
  • Indecomposable ordinal
  • ε₀ and the hierarchy of ε_α numbers
  • The Feferman-Schütte ordinal Γ₀
  • The Extended Veblen function
  • The small Veblen ordinal
  • The large Veblen ordinal
  • The Bachmann-Howard ordinal
  • The Takeuti-Feferman-Buchholz ordinal
  • ω₁ᶜʰ = the supremum of the game values for white of the finite positions in infinite chess
  • ω₁ᶜʰ,ᶜ = the supremum of the game values for white of the computable positions in infinite chess
  • ω₁ᶜʰ ≅ the supremum of the game values for white of all positions in infinite chess
  • The omega one of chess
  • Church-Kleene ω₁ᶜᵏ, the supremum of the computable ordinals
  • Admissible ordinals and relativized Church-Kleene ω₁ˣ
  • λ = the supremum of the writable ordinals
  • ζ = the supremum of the eventually writable ordinals
  • Σ = the supremum of the accidentally writable ordinals
  • The ordinals of infinite time Turing machines
  • Stable ordinals
  • ω₁, the first uncountable ordinal

  • ℵ₀ and everything mentioned above ^
  • Cardinals, infinite cardinals
  • ℵ₁, the first uncountable cardinal
  • Uncountable, regular and successor cardinals
  • ℵ₂, the second uncountable cardinal
  • ℵ_ω and singular cardinals
  • Buchholz's ψ functions
  • The aleph numbers and the ℵ_α hierarchy
  • ℵ-fixed point
  • The descriptive set-theoretic cardinals
  • The bounding number b, the dominating number d, the covering numbers, additivity numbers and many more
  • Cardinal characteristics of the continuum
  • The continuum
  • Θ
  • ℶ_ω and the strong limit cardinals
  • The beth numbers and the ℶ_α hierarchy
  • ℶ-fixed point
  • Σ_n-extendible cardinal
  • 0-extendible cardinal
  • Σ₂ correct and Σ_n-correct cardinals
  • Correct cardinals, V_δ ≺ V and the Feferman theory

  • Zermelo-Fraenkel set theory
  • Con(ZFC) and Conα(ZFC), the iterated consistency hierarchy
  • The minimal transitive model
  • Transitive model of ZFC
  • The transitive model universe axiom
  • Worldly cardinal and the α-worldly hierarchy, hyper-worldly cardinal
  • Morse-Kelley set theory
  • Weakly inaccessible cardinal, (strongly) inaccessible cardinal
  • Grothendieck universe axiom (the existence of a proper class of inaccessible cardinals)
  • 1-inaccessible, the α-inaccessible hierarchy, hyper-inaccessible cardinals, Ωα-inaccessible cardinals
  • Jäger's collapsing functions and ρ-inaccessible ordinals
  • Σ2-reflecting, Σn-reflecting and reflecting cardinals
  • Ord is Mahlo
  • Pseudo uplifting cardinal, uplifting cardinal
  • Σn-Mahlo cardinals, Σω-Mahlo cardinal, weakly Mahlo cardinal, (strongly) Mahlo cardinal, 1-Mahlo, the α-Mahlo hierarchy, hyper-Mahlo cardinals, Ωα-Mahlo cardinals
  • The positive set theory GPK∞+
  • Σn-weakly compact cardinals, Σω-weakly compact cardinal, weakly compact (=Π11-indescribable=0-Ramsey) cardinal
  • Σnm- and Πnm-indescribable, totally indescribable, η-indescribable cardinals
  • η-shrewd, shrewd, A-η-shrewd, A-shrewd cardinals
  • Unfoldable cardinal, strongly unfoldable cardinal
  • Weakly superstrong cardinal
  • Strongly uplifting (=superstrongly unfoldable) cardinal
  • Ethereal cardinal
  • Subtle cardinal
  • Weakly ineffable (=almost ineffable=genuine 0-Ramsey) cardinal, ineffable (=normal 0-Ramsey) cardinal
  • n-Ramsey, genuine n-Ramsey, normal n-Ramsey, <ω-Ramsey cardinals
  • The n-subtle, n-almost ineffable, n-ineffable cardinals' hierarchy
  • Completely ineffable cardinal (=ω-filter property)
  • Weakly Ramsey (=1-iterable) cardinal, super weakly Ramsey cardinals, ω-Ramsey cardinal
  • (1-)remarkable (=virtually supercompact), virtually measurable, strategic ω-Ramsey cardinals, weak Proper Forcing Axiom
  • Virtually extendible (=2-remarkable), virtually C(n)-extendible (=n+1-remarkable) cardinals, completely remarkable cardinal, Generic Vopěnka's Principle
  • Virtually Shelah for supercompactness cardinal
  • The n-iterable and virtually n-huge* hierarchy
  • Virtually rank-into-rank cardinal
  • ω-Erdős cardinal, weakly remarkable cardinal that is not remarkable
  • The α-Erdős, α-iterable and (ω,α)-Ramsey hierarchy for countable infinite α
  • Silver cardinal
  • 0♯ (zero-sharp), existence of Silver indiscernibles
  • ω1-iterable cardinal, (ω,ω1)-Ramsey cardinal
  • ω1-Erdős cardinal and γ-Erdős cardinals for uncountable γ, Chang's conjecture
  • Almost Ramsey cardinal
  • α-weakly Erdős cardinals, greatly Erdős cardinal
  • Virtually Ramsey cardinal, Jónsson cardinal, Rowbottom cardinal, Ramsey cardinal
  • Ramsey M-rank
  • α-Mahlo–Ramsey hierarchy
  • Πα-Romsey, completely Romsey (=ω-very Ramsey), α-hyper completely Romsey, super completely Romsey cardinals
  • α-filter property, α-Ramsey cardinal (for ω<α<κ), almost fully Ramsey (=<κ-Ramsey) cardinal
  • Strongly Ramsey cardinal, strongly Ramsey M-rank, super Ramsey cardinal, super Ramsey M-rank
  • κ-filter property, fully Ramsey (=κ-Ramsey) cardinal
  • κ+-filter property, strategic (ω+1)-Ramsey cardinal, strategic fully Ramsey cardinal, ω1-very Ramsey cardinal, κ-very Ramsey cardinal
  • Singular Jónsson cardinal
  • Weakly measurable cardinal, measurable cardinal
  • 0† (zero-dagger)
  • Nontrivial Mitchell rank, o(κ)=1, o(κ)=κ++
  • The θ-strong, hypermeasurability and θ-tall hierarchies, tall and strong cardinals
  • Strongly tall cardinal
  • Woodin cardinal
  • The axiom of determinacy and its projective counterpart
  • Shelah cardinal
  • Superstrong cardinal, C(n)-superstrong hierarchy
  • Subcompact cardinal
  • The proper forcing axiom and Martin's maximum
  • Indestructible weakly compact cardinal
  • Nearly supercompact and nearly strongly compact cardinals
  • λ-strongly compact cardinals, strongly compact cardinal
  • λ-supercompact cardinals, supercompact cardinal, C(n)-supercompact cardinals
  • Enhanced λ-supercompact cardinals, enhanced supercompact cardinal, λ-hypercompact cardinals, hypercompact cardinal
  • Woodin for strong compactness
  • α-extendible hierarchy, extendible cardinal, C(n)-extendible hierarchy
  • Vopěnka scheme, Vopěnka principle, Vopěnka-scheme cardinal, Vopěnka (=Woodin for supercompactness) cardinal
  • Shelah for supercompactness
  • High-jump cardinal, almost high-jump cardinal, super high-jump cardinal, high-jump with unbounded excess closure cardinal
  • Almost huge, huge, huge*, super almost huge, superhuge, ultrahuge, 2-superstrong cardinal
  • n-fold variants of hugeness (plus C(n) variants), extendibility, supercompactness, strongness, etc…
  • The wholeness axioms, axioms I4
  • Rank into rank axioms (I3=E0, IEω, IE, I2=E1, Ei, I1=Eω plus m-C(n)-Ei), ω-fold variants, I0 axiom and strengthenings
  • The Kunen inconsistency
  • Weakly Reinhardt, Reinhardt, super Reinhardt, A-Super Reinhardt, totally Reinhardt cardinal
  • Berkeley cardinal, club Berkeley, limit club Berkeley cardinal

Also see: Kunen Inconsistency, Berkeley Cardinal Hierarchy, The Expanded Large Cardinal Catalogue,

Posted by Suggsverse