Is multiplicative mod Z9 cyclic?
47522
group generators of $(\mathbb Z_{17}-\{0\},\times)$
29204
$a\equiv\bar a\!\pmod{\!kn}\Rightarrow a\equiv\bar a\!\pmod{\! n};\ $ $(a\bmod kn)\bmod n=a\bmod n.\ $ Congruences persist mod factors of the modulus
95653
Euler's theorem: [3]^2014^2014 mod 98
5577
If $m$ divides $n$, find a free resolution of $\mathbb{Z}/m$ as a $\mathbb{Z}/n$-module.
68733
If $G/Z(G)$ is cyclic then $G$ is abelian – what is the point?
69046
Proof of $\mathbb{Q}$ is not cyclic
137373
Real Cyclic Extensions of $\mathbb Q$ of given degree
99815
Dividing versus multiplying by inverse in modular arithmetic
51221
Is $x^3-9$ irreducible over the integers mod 31?
5699
The number of ring homomorphisms from $\mathbb{Z}_m$ to $\mathbb{Z}_n$
139776
Divisibility tests and remainder mod $9,11,99,101,999,1001\,$ (casting out nines and elevens)
110703
How Can I prove (a+b) mod m = (a mod m) + (b mod m)) mod m?
98145
If $G$ is cyclic then $G/H$ is cyclic?
9118
Polynomial division: an obvious trick? [reducing mod $\textit{simpler}$ multiples]
107866
How is information disclosed by modular multiplication?
78852
If $\gcd(m,n) =1, $ then $m\mathbb{Z}/ mn\mathbb{Z} \cong \mathbb{Z}/(n)$
48585
Proving that if $G/Z(G)$ is cyclic, then $G$ is abelian