Lately there have been a ridiculous amount of off-topic threads put in this subforum, so I want to take the time to remind everyone that this is a very specific subforum meant for advanced algebra only. Basic algebra questions should be placed in the pre-university subforum. If your algebra question isn't part of an assignment or topic from at least a 2nd or 3rd year university course, chances are it shouldn't go here. Also, this is not the generic place to put any advanced question. If you have a question about analysis, please put it there. That's why we have an analysis subforum! If it's about topology, put it there! Again, that's why we have one.
Cliffnotes: Only put advanced algebra questions in this subforum. Those who can't follow this simple guideline will be warned, then infracted, so please don't do it.