What is the cardinality of the set of equivalence classes of countable order types under bi-embeddability?
62977
Show on $\mathbb{N}$ there are $2^{\aleph_0}$ nonisomorphic linear orders.
52451
Ordered Triples and Set Theory
7785
Cardinality of sum-set
68230
The cardinality of a countable union of sets with less than continuum cardinality
30587
Uncountable well ordered set in $Z^-$ theory.
149673
Cardinality of an infinite union of finite sets
78290
Countable axiom of choice: why you can't prove it from just ZF
55978
Prove that for every countable ordinal $\alpha$, $\alpha\times[0,1)$ is order isomoprhic to $[0,1)$
70196
Is there any well-ordered uncountable set of real numbers under the original ordering?
136094
$G_\delta$ singletons in compact Hausdorff and first countability
63489
The class of cardinal numbers is well ordered
115649
Proving two sets $A, B$ are order isomorphic
99599
Uncountable and countable
154474
Image of countable and uncountable sets
68994
Countable closed sets
131163
There is a well ordering of the class of all finite sequences of ordinals
118560
Ordered N-Tuples as Cartesian Products of Indexed Families