Is it true that $\mathbb{Z}[i]/m\mathbb{Z}[i]$ has exactly $\text{N}(m)$ elements?
41878
Cardinal of quotient rings of gaussian integers.
21840
Zero divisors and units for the ring $\mathbb{Z}/n\mathbb{Z}$ with integer $n$
35691
$\mathbb Z[\sqrt 3]$ contains infinitely many units
116943
Proof for maximal ideals in $\mathbb{Z}[x]$
19310
Identify the ring $\mathbb{Z}[x]/(2x)$
102721
Number of elements in the ring $\mathbb Z [i]/\langle 2+2i\rangle$
148550
Units in quotient ring of $\mathbb Z[X]$
120181
The ideal generated by $2$ and $ x$ in $\mathbb{Z}[x]$
8434
Order of $\mathbb{Z}[i]/(1+i)$
83001
Easier way to show $(\mathbb{Z}/(n))[x]$ and $\mathbb{Z}[x] / (n)$ are isomorphic
16507
Is $\mathbb{Z}= \{\dots -3, -2, -1, 0 ,1 ,2 , 3, \dots \}$ countable?
19884
The units of $\mathbb Z_4[x]$
50241
Cardinality of the quotient ring $\mathbb Z_5[i]/\langle 1+i\rangle$
36747
$\text{Tor}_0^R(M,N)\simeq M\otimes_R N$
85099
How many subsets of $\mathbb{N}$ have the same cardinality as $\mathbb{N}$?
143069
What are the direct summands in $\mathbb{Z}^n$?
119052
Finding invertible elements in $\mathbb{Z}/m\mathbb{Z}$