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New posts in Direct Product
The only group $G$ with one $A$ and one $B$ as composition factors is $G = A\times B$ (where $A$ and $B$ are non-abelian, finite and simple)
May 08, 2021
Homomorphisms from $\prod_{i\in\mathbb Z}\mathbb Z $ to $\oplus_{i\in\mathbb Z}\mathbb Z$ that fixes $\oplus_{i\in\mathbb Z}\mathbb Z$
May 08, 2021
If $A$ and $B$ are groups then prove that $A\times B\cong B\times A$
May 07, 2021
Does there exist a group that is both a free product and a direct product of nontrivial groups?
May 06, 2021
In the category $\mathbf{Set}$ is "the product of an empty set of sets a one-element set"?
May 05, 2021
Structure of groups of order $pq$, where $p,q$ are distinct primes.
Apr 28, 2021
Direct sums and direct products
Apr 25, 2021