Nilpotent elements in Zn
14403
If $n = p_1^{a_1} ... p_r^{a_r}$ the set of nilpotents of $\mathbb{Z}_n$ is $(p_1 p_2 ... p_{r-1} p_r)\Bbb Z_n$
35660
Elements of order 2 in $D_{2n}$
83115
A set of elements in a reduced unity ring
144531
How to prove that a nilpotent operator has a basis representation that is strictly upper triangular?
39788
$a+1,a-1$ invertible for nilpotent element
78298
On the nilpotence of the matrix $AB-BA$
130268
How to prove that a nilpotent matrix is not invertible?
9223
Finding $\iiint_K (x^2 -z^2)\, dx\, dy \,dz$
50412
Prime elements in $\mathbb{Z}/n\mathbb{Z}$
128891
What is the significance of allowing nilpotents in scheme theory?
93760
There is an element of order $51$ in the multiplicative group $(Z/103Z)^∗.$
114662
Construction of a specific non-commutative and infinite group (with conditions on the order of the elements)
56097
If $A$ and $AB-BA$ commute, show that $AB-BA$ is nilpotent
151797
Which element belong to the principal ideal $(3+i)$?
55259
ArcTan[z] and ArcTan[x,y], Restriction and Conversion
23517
Presentation $\langle x,y,z\mid xyx^{-1}y^{-2},yzy^{-1}z^{-2},zxz^{-1}x^{-2}\rangle$ of group equal to trivial group
42528
Prove that every idempotent element is not nilpotent element.