Finding invertible polynomials in polynomial ring $\mathbb{Z}_{n}[x]$
35222
Characterizing units in polynomial rings
101313
Minimal polynomial, determinants and invertibility
115541
Subrings of polynomial rings over the complex plane
138258
What is the injective envelope of $\mathbb{Z}/n\mathbb{Z}$?
31216
Is the image of $\Phi_n(x) \in \mathbb{Z}[x]$ in $\mathbb{F}_q[x]$ still a cyclotomic polynomial?
45627
Find a sub-ring of M(2, $\mathbb{Q}$) which is isomorphic to $\mathbb{Q}$
76327
Finding inverse of polynomial in a field
27942
showing that $n$th cyclotomic polynomial $\Phi_n(x)$ is irreducible over $\mathbb{Q}$
35034
Multiplicative inverses for $Z_n$
108775
Identify the ring $\mathbb {Z}[i]/(2 + i) $
129827
Product of invertibles in $\Bbb Z_n$ [Wilson's Theorem generalization]
25290
Determine the number of irreducible monic polynomials of degree 3 in $\mathbb F_p[x]$
131366
Cyclotomic polynomial
120181
The ideal generated by $2$ and $ x$ in $\mathbb{Z}[x]$
106914
Existence of Irreducible polynomials over $\mathbb{Z}$ of any given degree
111493
Division algorithm for polynomials in R[x], where R is a commutative ring with unity.
127764
Showing that $\mathbb{Q}[\sqrt{2}, \sqrt{3}]$ contains multiplicative inverses