/sci/ - Science & Math

>>11339033
>masters in mathgs
>doing a PhD
>300k starting (dying in the Erdos sense of the word)
>400k starting

>>11342152
It's correct.
>>11342819
Remember that quotients aren't constructed with subgroups, they're constructed with relations.
So take the smallest equivalence relation such that [math]\Pi a_i \cong \Pi a_{ \sigma (i)}[/math] for [math] \sigma \in S^n[/math] , define multiplication on the equivalence classes, and check that it's well defined.