Why does the direct sum of infinitely many groups require only finitely many are nonzero?
30825
Infinite coproduct of abelian groups
86926
Why isn't this a well ordering of $\{A\subseteq\mathbb N\mid A\text{ is infinite}\}$?
139078
Infinite partition of $\mathbb N$ by infinite subsets
99538
Non-trivial groups pairwise non-isomorphic with isomorphic direct products
31252
"Efficient version" of Cayley's Theorem in Group Theory
67554
In a group, the number of non-self-inverse elements is even
67272
Deduce that if $G$ is a finite $p$-group, the number of subgroups of $G$ that are not normal is divisible by $p$
88718
A group is generated by two elements of order $2$ is infinite and non-abelian
101735
A finite $p$-group cannot be simple unless it has order $p$
129610
Why is the direct product of a finite number of nilpotent groups nilpotent?
64269
Finding the minimal $n$ such that a given finite group $G$ is a subgroup of $S_n$
64582
Group covered by finitely many cosets
109801
multiplicative group of infinite fields
933
How many groups exist with order $n$ (two isomorphic groups are treated as the same group)
50602
Does uncountable summation, with a finite sum, ever occur in mathematics?
59908
Intuitive Explanation why the Fundamental Theorem of Algebra fails for infinite sums
90506
Finite multiplicative group of matrices with sum of traces equal to zero.