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New posts in ordinals
Products and coproducts in the simplex category
category-theory
ordinals
An easy to understand definition of $\omega_1$?
general-topology
elementary-set-theory
cardinals
ordinals
what does it mean that constructible universe is definable from ordinals?
logic
set-theory
model-theory
ordinals
What set theory axioms do I need to believe in uncountable ordinals?
set-theory
ordinals
axioms
If $\alpha$ is an indecomposable ordinal, why $\Gamma(\alpha\times{\alpha})=\alpha$?
set-theory
ordinals
Does every ordinal have cardinality no greater than $\aleph_\mathbb{0}$?
elementary-set-theory
ordinals
"If inaccessible sets exist, their existence is not provable in ZF"
logic
set-theory
ordinals
Which ordinals can be "mistaken for" $\aleph_1$?
set-theory
model-theory
cardinals
ordinals
forcing
Is the proper class of all ordinals equivalent to the potential infinity of pre-Cantor times?
set-theory
infinity
ordinals
philosophy
foundations
Ordinals - motivation and rigor at the same time
elementary-set-theory
logic
intuition
ordinals
motivation
Simple (even toy) examples for uses of Ordinals?
set-theory
examples-counterexamples
ordinals
How can I call a exported function using ordinal number
windows
dll
ordinals
ordinal
How to prove the Milner-Rado Paradox?
set-theory
ordinals
Definition of cofinality
set-theory
ordinals
Definable order types without infinity axiom.
logic
set-theory
ordinals
descriptive-set-theory
Order-preserving injections of ordinals into $[0,1]$
set-theory
order-theory
ordinals
Is $\pmb{\eta}\cdot\pmb{\omega_1} = (\pmb{\eta} + \pmb{1})\cdot\pmb{\omega_1}$?
set-theory
order-theory
ordinals
Cofinality of an infinite cardinal, alternative definition
set-theory
cardinals
solution-verification
ordinals
Curious facts about ordinal numbers
number-theory
analysis
set-theory
ordinals
The Use of Ordinals and Cardinals in Recursive Proofs
elementary-set-theory
set-theory
ordinals
universal-algebra
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