Timeline for Intuition about the second isomorphism theorem
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jun 12, 2020 at 10:38 | history | edited | CommunityBot | Commonmark migration | |
| Jul 17, 2016 at 5:09 | comment | added | p Groups | yes; second the isomorphism theorem was about isomorphism for some quotients, for which, normality of one subgroups is necessary and sufficient. | |
| Jul 16, 2016 at 12:50 | comment | added | porkynator | Just to clarify one thing: in case $N$ and $S$ aren't normal, $SN$ is not necessarily a subgroup of $G$ (it is if and only if $SN=NS$). But $SN$ is still the union of cosets of $N$, so it makes sense to write $|SN:N|$. | |
| Apr 12, 2016 at 3:59 | history | answered | p Groups | CC BY-SA 3.0 |