On the number of countable models of complete theories of models of ZFC
96892
Number of Non-isomorphic models of Set Theory
78412
Representing a countable field by $\Bbb N$ [transport of algebraic structure]
140662
Powers of infinite cardinals in the generic extension
81423
Completeness and Topological Equivalence
65098
Number of $\sigma$  -Algebra on the finite set
155168
Is the collection of finite subsets of $\mathbb{Z}$ countable?
97697
Countable union of sets of cardinality $c$ has cardinality $c$
87451
Construction of matrices under ZFC axioms
137621
The Number of Topologies on a Finite Set
132537
Class of sets of a given infinite cardinality
136613
Does TG prove that ZFC2 has a model?
148516
Proof that $\omega^\omega$ is completely metrizable and second countable
52429
Explicit countable elementary extension of $\mathbb{N}$
19604
Complete first order theory with finite model is categorical
98518
Cardinality of equivalence relations on N
154474
Image of countable and uncountable sets
69838
Does a countably infinite power set exist?