Rhea Section for MA 453 Professor Walther, Spring 2011

Final exam and midterms

You may bring: lecture notes, homework assignments.

No books, no calculators.

What's New

Course Related Material

Homework Related

Extra credit

Students in MA453 Spring 2011 (Walther) have the opportunity to earn up to a 5% bonus by contributing a Rhea page on a subject related to algebra. To pick a subject, simply write your name next to it. Please no more than one student per subject. Your page will be graded based on content as well as interactions with other people (page views, comments/questions on the page, etc.). The number of links to other courses and subjects will also be taken into account: the more the merrier! Please do not simply copy the lecture notes and do not plagiarize. Read Rhea's copyright policy before proceeding.

Topic Number Topic Description Student Name Deadline
1 Normal subgroups Mark Knight
2 Morphisms Jennifer Davis
3 Finite subgroups of O(2) Write your name here
4 Finite subgroups of E(1) Write your name here
5 Lie groups Matthew Carmichael
6 The fundamental theorem of Abelian groups over a PID Write your name here
7 Groebner bases Write your name here
8 Curves in the plane Write your name here
9 Spectrum of a ring Write your name here
10 Sylow subgroups Write your name here
11 In how many parts can you cut the plane with k cuts? Write your name here
12 The fundamental group of a space Write your name here

Exam Related

  • Q: Does anyone know if the final is cumulative? A: Yes, it is.



Area to post questions, set up study groups, etc.

Questions for Uli

Uli has agreed to contribute to Rhea under the condition that I maintain the page regarding questions for him. Therefore, if you would like your question read by Uli, please post it here and update the count:

I will try to keep the page clean and updated.

Software requirement

Firefox version 2 is not good enough to see several things on Rhea pages. Use version 3 or higher.

Book market

Click here to find email addresses of people that would like to sell or buy edition 6.

Instructor's corner/How to get started

  • Click the "Help" button above and read what's there.
  • Remember: you need to log in (with your Purdue login) if you want to edit or create pages.
  • Edit a page by clicking "edit" (under "Page" above). Don't forget to "save" (at bottom of "edit" page).
  • Create a new page B from a page A by editing page A and inserting a "B" enclosed by a pair of square brackets. (Note that "B" is like a web address for a webpage. Each page also has a title, which you can chose by writing "B|fancy_title" in double square brackets rather than just "B"). Then "save" and find the new red link on page A that appeared. Click it. You are now on page B (which of course is empty at this point). NOTE: if the "new" link comes out blue, instead of red, you chose a title of an existing page and did not create a new one. The blue link gets you simply to the already existing one. Use distinctive names for your new creations!
  • If you place "Category:MA453Spring2011Walther" enclosed by square brackets on top of a new page it will be parsed by the system as belonging to this course. It can then be searched (for) in a meaningful way.
  • To get a quick idea what works how, click "edit" on this page to see how to do the things visible on this page.
  • Note that the "edit" mode has a spell-checking feature: look for red-underlined stuff.
  • You can look at other Rhea pages by clicking "main page" and then "course pages". Especially the ECE pages will get you an idea where one can take Rhea...
  • Do you want to [[MA_453_Spring_2009_Walther_display|display pages in other pages]

Alumni Liaison

Prof. Math. Ohio State and Associate Dean
Outstanding Alumnus Purdue Math 2008

Jeff McNeal