Question on units of $\mathbb{Z}[i\sqrt{5}]$
95863
Describe the units in $\mathbb{Z}[\sqrt{-d}]$
158356
Need a proofreading why all the units are satisfied $a^2-2b^2 =\pm1$ for $\mathbf{Z}[\sqrt{2}]$
21840
Zero divisors and units for the ring $\mathbb{Z}/n\mathbb{Z}$ with integer $n$
9794
Quotient ring of Gaussian integers $\mathbb{Z}[i]/(a+bi)$ when $a$ and $b$ are NOT coprime
37219
Quadratic Integers in $\mathbb Q[\sqrt{-5}]$
8087
Algebraic integers of $\mathbb{Q}(\sqrt{m})$ for $m$ a squarefree integer
1576
Finding the elements in the group of units of the ring of integers modulo n that are their own inverse.
127306
Is the group of units of a finite ring cyclic?
123482
How to compute $\mathbb{Z}_n^*$, the unit group of the integers modulo $n$?
134342
Find a polynomial of degree > 0 in $\mathbb Z_4[X]$ that is a unit.
35279
It's $\mathbb{Z}\subseteq \mathbb{Z}[X]/(X^5-1)$ an integral extension?
89864
Units in finite polynomial rings
143069
What are the direct summands in $\mathbb{Z}^n$?
120594
$\mathbb Z[i]/ \langle 1+2i \rangle \cong \mathbb Z_5$
4105
Irreducible but not prime in $\mathbb{Z}[\sqrt{-5}] $
132725
Is $\mathbb{Z}/\langle n\rangle$ cyclic and of order $n$?
115282
Showing that $\mathbb Q(\sqrt{17})$ has class number 1