Units in a finite ring
63568
Ring with finitely many zerodivisors
52966
Rings, ideals and units-proof
107821
The ring of integers of $\mathbf{Q}[i]$
93703
Groups of units of $\mathbb{Z}\left[\frac{1+\sqrt{-3}}{2}\right]$
99715
Proper ideal and units proof
14343
Every nonzero element in a finite ring is either a unit or a zero divisor
103830
Each element of a ring is either a unit or a nilpotent element iff the ring has a unique prime ideal
6121
Quotient ring of Gaussian integers
20613
Units (invertibles) of polynomial rings over a field
95863
Describe the units in $\mathbb{Z}[\sqrt{-d}]$
153291
Why a ring homomorphism from a local ring will not map a non-unit to a unit？
24203
Finding Zero Divisors and Units of Rings $\mathbb{Z}_n \times \mathbb{Z}_m$
51578
Noetherian ring with finitely many height $n$ primes
132133
Number of elements of a finite field
119067
Basic Ring Theory Question involving the unit element
5360
Ideal contained in a finite union of prime ideals
19884
The units of $\mathbb Z_4[x]$