Commutativity of ring of order $p^2$ with unity $e$ and characteristic $p$
133878
Ring of order $p^2$ is commutative.
35777
$\mathbb{R}[X,Y]/(Y-X^2,Y+X)\cong_\text{Ring} \mathbb{R}\times \mathbb{R}$
66134
Sufficiently many idempotents and commutativity
65224
Prove that if $a^2 = a$ for all elements of the ring $R$, then $R$ has characteristic 2. Is the converse of the statement true?
92822
Finite number of elements generating the unit ideal of a commutative ring
8602
Galois Group of $(x^2-p_1)\cdots(x^2-p_n)$
148101
Basis for $\mathbb{Z}^2$
67470
If $S$ is a ring with the property that $s=s^2$ for each $s \in S$, then is $S$ commutative?
103552
The minimal polynomial of a primitive $p^{m}$-th root of unity over $\mathbb{Q}_p$
110390
Order of group $GL_{2}\left( \mathbb{F}_{p}\right) $
95806
Proving commutativity of convolution $(f \ast g)(x) = (g \ast f)(x)$
28803
Extension of degree 2 with characteristic not 2
119067
Basic Ring Theory Question involving the unit element
90591
On the group of all complex roots of unity whose orders are powers of $p$, prime number
89702
Let $R$ be a ring such that for all $a,b$ in $R$, $(a^2-a)b=b(a^2-a)$. Then $R$ is commutative
27766
Comaximal ideals in a commutative ring
80088
What possible characteristics may a local commutative unital ring have?