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Notable Question

Question with 2,500 views. This badge can be awarded multiple times.

pxc3110

1,4301 gold badge15 silver badges32 bronze badges

earned this badge 7 times.

Prove that $ AB$ is a subgroup of order $mn$ if $m$ and $n$ are relatively prime.

Awarded Jul 3, 2022 at 17:11

If G is a finite abelian group and $a_1,...,a_n$ are all its elements, show that $x=a_1a_2a_3...a_n$must satisfy $x^2=e$.

Awarded Apr 25, 2022 at 23:05

Show that $G$ is a group if the cancellation law holds when identity element is not sure to be in $G$ [duplicate]

Awarded Jan 31, 2022 at 3:06

Parametrization of a unit 2 sphere

Awarded May 19, 2021 at 20:47

If every left coset of $H$ is a right coset the show that $H=aHa^{-1}$ for all a in G

Awarded Sep 27, 2020 at 6:57

How can you find all subgroups of a certain group?

Awarded Dec 6, 2017 at 17:32

Show that if $f \circ g$ is surjective, then $f$ is surjective, and $g$, the function applied first, needs not to be.

Awarded Mar 23, 2017 at 0:31

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