Cardinality of a finite field is $p^{n}$
3703
Order of finite fields is $p^n$
121890
Proof that $ p $ | ${ p^n \choose k } $ for any prime $p$ and $ k < p^n$
33894
How many chains are there in a finite power set?
127233
Cardinality of order types in $\mathbb{N}$
113175
Why is the algebraic closure of a finite field countable?
92672
Number of elements which are cubes/higher powers in a finite field.
134676
Number of elements of order $p$ is a multiple of $p-1$ (finite group).
85681
Cardinality of polynomials with real coefficients
23712
$F$ is a finite field of size $s$. Prove that if $s=2^m$ for some $m>0$, then all elements of F have a square root.
106325
Question about Cardinality
156006
Cardinality of set containing all infinite subsets of $\mathbb{Q}$
124060
Are these subsets of the powerset P(N) countable?
128305
$PGL(n, F)=PSL(n, F)$
73652
Exhibiting an isomorphism between two finite fields
89864
Units in finite polynomial rings
149673
Cardinality of an infinite union of finite sets
114262
Find the cardinality of the following set $S_n=\{(x,y)|x^2+y^2=n, \text{where }x,y,n \in \mathbb Z\text{ and }n\geq0 \}$