Minimum size group with an element that is its own inverse
40131
If n is such that every element $(\mathbb{Z}/n\mathbb{Z})^{\times}$ is a root of $x^2-1$. Prove that $n$ divides 24.
63253
Computing easy direct limit of groups
120095
How many ways to split n elements in k groups?
1576
Finding the elements in the group of units of the ring of integers modulo n that are their own inverse.
8742
Examples and further results about the order of the product of two elements in a group
85023
Permutation of n objects with restriction of adjacent pairs
129465
Minimizing Frobenius norm of a special type
80616
A ring with few invertible elements
48369
discrete subgroups of euclidean space
111049
Groups with given automorphism groups
21568
Maximal order of an element in a symmetric group
78283
Centralizer of a given element in $S_n$?
83115
A set of elements in a reduced unity ring
114662
Construction of a specific non-commutative and infinite group (with conditions on the order of the elements)
17997
Right identity and Right inverse implies a group
117658
A set with n elements has 2^n subsets
57644
Lower bounds for ${{2n} \choose {n}}$