Cardinality of the set of finite sets in the power set of natural numbers
41661
Show that the set of all finite subsets of $\mathbb{N}$ is countable.
65768
What is the cardinality of the set of the empty set?
79568
Cardinality of the set $D$
126015
Elementary number theory in sets
1318
What is wrong with this proof that the power set of the natural numbers is countable?
132537
Class of sets of a given infinite cardinality
41052
The set of real numbers and power set of the natural numbers
151928
How to prove that $N\setminus A$ is finite?
108922
Cardinality and infinite sets: naturals, integers, rationals, bijections
137621
The Number of Topologies on a Finite Set
66301
The cardinality of the set of countably infinite subsets of an infinite set
92672
Number of elements which are cubes/higher powers in a finite field.
156660
The set of all strictly increasing sequences of natural numbers
156335
Proving Power Set of $\mathbb N$ is Uncountable
30021
Bijection between set of all binary sequences and power set of $\mathbb N$.
87830
Relating the union of the power set of a set to the set itself
79974
The cardinality of Lebesgue sets