Math 369 Intro to Abstract Algebra Department of Mathematics Towson University 

Introduction to Abstract Algebra 

Fall 2016 

GENERAL 


COURSE GOALS 
For most students, this course will be the first serious venture into the world of abstract mathematics. Similar to the jump from a specific real number to a variable, we will, in a certain sense, treat the operations '+' and '·' as variables. We will see what the essential properties of the operations are and how varying these properties results in different algebraic objects. Another measure of the level of abstraction is that the integers modulo n will serve as examples of groups, rings, and fields (these are the objects we will study). Among other examples, we will look at the group of matrices under matrix multiplication and permutations of finite sets (where multiplication corresponds to composition). There are numerous applications of abstract algebraic objects in mathematics and physics; our course, however, will concentrate on the abstract side. There will be many opportunities to see how rigorous reasoning actually leads to discoveries (while in lowerlevel courses, rigorous reasoning is often a way to confirm a discovery made through other means). Developing and increasing the capacity for abstract thinking is an important longterm objective of this course. More often than not, mathematics is a collaborative activity. Mathematicians (both in academia and in the industry) rely on their peers to review their work to see if there are any gaps in the arguments. For you, peer review is also an efficient way to learn proofs. That is why this course will emphasize team activities. 

TEXT  Abstract Algebra, Beachy and Blair, 3rd edition.  
CALCULATOR  Will not be needed.  
GRADING  There will be written team homework,
minihomework, two midterm tests, and a comprehensive final examination.
The higher of the two midsemester test scores will contribute 25% and the lower test score will count 15% in the final grade.
Written homework will count 20%, and the final 40%. Minihomework will count as a lettergrade adjustment at the end of the course.
This course will use a different correspondence between the numeric grades and the letter grades than the more usual 908070 scheme. The percentage score 80% is the dividing line between A and A; 72% and above is a B; and 60% is (barely) a C. For written homeworks, this means that the score of 20 of 25 is an A; 18 of 25 is a B; and please try not to get below 15 too often. On the exams, this means that you can skip a problem and still get an A, if all the other problems are solved correctly. This grading scheme takes into account the level of difficulty of the assignments and the exams as well as the rigorous grading style of your instructor. 

TEST DATES 
Test 1: Wednesday, October 5
Test 2: Wednesday, November 2 Final: Friday, December 16, 10:15am 

TEAM HOMEWORK 
Written team homework will be assigned weekly. It is a very important part
of the class, information about it and additional resources can be found in the
Homework Guide.
Ideally, you should work with your team to solve each homework problem absolutely correctly and present a neatly written (better, typeset) solution by the time the homework is due. This will guarantee the prefect written homework score as well as the full 10 point credit on the "homework component" for exams 1, 2, and the final. The rest of this section explains what happens if your team did not manage to solve some of the homework problems correctly. First, your homework score (the one that's worth 20% of your final grade) is the average of the grades you get for each problem when you submit the work for the first time. In addition, you will lose up to 10 points on both midterm exams, as well as on the final, unless you revise (i.e., solve correctly by the revision cutoff date) each of the homework problems that received a bad score. The revisions have to be done individually; each revision should be a selfcontained solution of the problem. The grading scheme for homework problems is explained in the Homework Guide. To get the full 10 points on the exam, you need to have a grade 4 or higher for each of the homework problems. To get 5 points, you need to have a grade of 3 or higher for each of the problems. If there is a problem with the grade 2 or lower, the homework component grade will be 0. Revisions can be submitted any time, in person or electronically, before the start of the corresponding exam. There is one restriction (meant to discourage procrastination): you can submit only three revised solutions in any 24 hour period. 

MINI HOMEWORK 
This homework will be assigned after every class and will be due the next class period.
Typically, it will consist of a reading assignment and some of the routine exercises.
You will not need to hand in anything, instead, two to four students will be volunteered
to present the solutions at the board, while the rest of the class will be expected
to discuss the reading assignment with me or will complete a short quiz.
If your presentations and participation/quizzes are consistently good (feel free to ask me for feedback if you are not sure), I will add a third of a letter grade to your final grade. At worst (if you are not ready or miss the class half the time), I will subtract one full letter grade from your final grade. 

COURSE POLICIES 
Class attendance is expected. If you miss a class, it is your responsibility
to get the material and the homework assignment from your fellow students.
You are welcome and encouraged to ask me for help with course material during the office hours or by making an appointment. The rule for team assignments is that as least two of the team's members must be present. You should expect to spend a considerable amount of time working on this course outside of class. According to the US Department of Education definition, a credit hour is ''an amount of work that reasonably approximates not less than one hour of classroom ... instruction and a minimum of two hours of out of class student work each week for approximately fifteen weeks''. This is a 4credit hour course, so you need to budget 8 hours per week for independent work on this course. At the same time, try to be efficient. If you are spending a lot of time on homework without making much progress, talk to me. Participation in homework teams is an essential part of the course. If you miss a team meeting, it is your responsibility to work out what form should your contribution to the team effort be. Putting your name on a team homework if you have not participated in meetings is a violation of University's academic integrity policy. The use of external to the course sources of solutions to homework problems is allowed, provided the source is fully cited and the material is critically evaluated. If you do not cite a source for the information, or copy a solution without a credible attempt to understand it, then you are violating the University's Academic Integrity Policy. Tests and quizzes are to be written strictly individually. University's Academic Integrity Policy will be enforced; everyone caught cheating on any assignment will face a range of penalties, up to a failing grade in the course. Normally, no makeup tests will be given; if for some reason you are not able to take a test, please, let me know as soon as possible. If you have questions or concerns about the course, be sure to discuss them with me during my office hours or by appointment. Everyone participating in this course is expected to be respectful of each other without regard to race, class, linguistic background, religion, political beliefs, sex, gender identity or expression, sexual orientation, ethnicity, age, veteran's status, or physical ability. If you feel these expectations have not been met, please feel free to discuss it with me or with the designated diversity liaison Dr. Elizabeth Goode. 

OTHER IMPORTANT DATES 
Drop without W deadline: Wednesday, September 7
Thanksgiving break: November 23  26 Drop deadline: November 7 Last class: Monday, December 12. 
GOOD LUCK!