Aut($C_p) = C_{p-1}$when $p$ is prime, why?
40321
$\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to $U_n$.
155190
Stone-Weierstrass theorem with $p(1/x)$
135351
$C(n,p)$: even or odd?
114346
Why is $a^{-1}$ mod $p$ equal to $a^{p-2}$ mod $p$?
76685
Determine $\text{Aut}(S)$ where $S = \mathbb{Q}[x]/(x^2)$
142584
Confusion in proof that primes $p = 4k + 1$ are uniquely the sums of two squares
79407
How to solve ~(P → Q) : P & ~Q by natural deduction?
33714
$p$ prime, $p\mid a^k \Rightarrow p^k\mid a^k$
152481
If order of group is $p^2$, where $p$ is prime, how can you deduce $G$ is isomorphic to $C_{p^2}$ or $C_p \times C_p$?
55621
Show that if $c_1, c_2, \ldots, c_{\phi(m)}$ is a reduced residue system modulo m, $m \neq 2$ then $c_1 + \cdots+ c_{\phi(m)} \equiv 0 \pmod{m}$
66535
How to prove $P(A\cap B)\geqslant P(A)+P(B)-1$?
113612
Why does $P(\theta_1\mid D, \theta_2) \propto P(D \mid \theta_1, \theta_2)P(\theta_1)$ hold?
84167
Regarding the sum $\sum_{p \ \text{prime}} \sin p$
151961
Irreducibility of $x^{p(p-1)}+x^{p(p-2)}+\cdots+x^p+1$ over $\mathbb Q$
124742
P(A|C)=P(A|B)*P(B|C)?
130207
Why is the p-value written with a supremum?
36943
How to prove that $L=${$a^p$: p is prime} isn't regular?