The roots of $X^2-1$ in the ring $(\mathbb{Z}/n\mathbb{Z})[X]$
31933
$x^2 = 1$ in the ring $\mathbb{Z}/n \mathbb{Z}$
119702
Showing a bijection between the set of ringhomomorphisms $\mathbb{Z}[i] \to R$ and the set of $x \in R$ for which $x^2+1=0$
24203
Finding Zero Divisors and Units of Rings $\mathbb{Z}_n \times \mathbb{Z}_m$
150300
Root of unity for $n+1$
33781
Is $\mathbb{Z}[x]/(x^2+1)$ isomorphic to $\mathbb{Z}[i]$?
88466
Show that polynomial $X^{n+1}-aX^n+aX-1$ has only roots of module $1$
46821
Finding roots in $\mathbb{Z}_p$
250
An irreducible $f\in \mathbb{Z}[x]$, whose image in every $(\mathbb{Z}/p\mathbb{Z})[x]$ has a root?
90933
Finding the roots of complex numbers
41312
Question on primitive roots of unity
82571
Number of solutions of $x^2=1$ in $\mathbb{Z}/n\mathbb{Z}$
7954
Roots of monic polynomial over a number ring
67705
Square roots in the $p$-adics
113386
Find all integer roots of: $x^2(y-1)+y^2(x-1)=1$
101169
Prove that $x^2 = - 1$ has no solution in $\mathbb{Z}$
40131
If n is such that every element $(\mathbb{Z}/n\mathbb{Z})^{\times}$ is a root of $x^2-1$. Prove that $n$ divides 24.
115299
Elements of $\mathbb{F}_p$ having cube roots in $\mathbb{F}_p$