Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 3710
7 votes
Accepted

Groups whose normal subgroups form a chain with respect to inclusion

For solvable groups without Frattini chief factors, this is equivalent to each of the following (individually): having a unique chief series, every quotient group having a faithful primitive permuta …
Jack Schmidt's user avatar
  • 10.7k
53 votes
Accepted

Groups with all subgroups normal

These are called Dedekind groups, and the non-abelian ones are called Hamiltonian groups. The finite ones were classified by Dedekind, and the classification extended to all groups by Baer. The non- …
Jack Schmidt's user avatar
  • 10.7k