Finiteness of a set of integers of a number field
97357
How many elements in a number field of a given norm?
129476
The trace map in a finite field.
45456
Do the digits of $\pi$ contain every possible finite-length digit sequence?
121823
Number of subrings of a Field
58490
Polynomials, finite fields and cardinality/dimension considerations
149673
Cardinality of an infinite union of finite sets
152638
The set of integers $n$ expressible as $n=x^2+xy+y^2$
9651
Cardinality of cartesian product of an infinite set with N
81221
The prime number theorem over a finite field - Lang's *Algebra*, Chapter V, Exercise 23(b)
101669
Cardinality of the Set of all finite subset of $\mathbb{R}$
20218
Is this field extension finite?
98577
Show that the set $\mathbb{Q}(\sqrt{p})=\{a+b\sqrt{p}; a,b,p\in\mathbb{Q},\sqrt{p}\notin \mathbb{Q}\}$ is a field
78117
Closed property of nonempty finite set
83586
Finite fields and primitive elements
75970
$\mathbb Z[1/2]$ is not finitely generated?
126552
Number of subfields of finite field
143321
Number of roots of a polynomial over a finite field