# MVE150 / MMG500 Algebra Spring 21

## MVE150 / MMG500 Algebra Spring 21

Lecturer and examiner: Per Salberger.

### Schedule

The schedule of the course is in TimeEdit.

#### Lectures

Normally there will be a lecture Tuesday 8-10 and Thursday 13-15. The first Tuesday January 19th there is also a lecture 10-12.

Textbook

J.R. Durbin: Modern Algebra, An Introduction, John Wiley & Sons, version 5 or 6.

Note that the sections 53, 54, 55 in the fifth edition are moved to sections 56, 57, 58 in the sixth edition!

Problem sessions The problem sessions are held on Tuesday 10-12 and Friday 10-12, beginning January 22th . The problems will be chosen from the list of recommended exercises on the home page. All these are important, and most of them will be discussed during the problem sessions. The English spoken problem sessions are led by Jiacheng Xia and the Swedish spoken ones by Per Salberger,

#### Recommended exercises

The exercises below are selected from the sixth edition of Durbin’s book . The same exercises may also be found in the fifth edition and usually with the same numerotation. The exceptions are listed with a V for their numbers in the fifth edition. A star * indicates that the exercise is considered more challenging. Please try to do as many exercises as possible before the days indicated for them!

Days Exercises
Jan 22 3.1-3.8, 3.13, 3.24, 4.1, 4.2, 5.1-5.12, 5.17, 6.1-6.3, 6.5, 6.9.
Jan 26 and Jan 29 7.1, 7.2, 7.13, 7.14, 7.22*-7.24*, 9.5-9.8 , 10.1-10.3 , 10.13 , 10.25, 10.26, 11.3, 11.13-11.17*, 12.7 , 12.20 , 12.21. 13.5, 13.6, 13.7, 13.9
Feb 2 and Feb 5 13.19*, 13.20, 13.21, 14.3-14.7, 14.9, 14.18, 14.25, 14.14, 14.23, 14.24, 14.31, 14.32, 14.33, 14.34, 15.24*, 16.2, 16.5, 16.7, 16.15, 17.2, 17.4, 17.7, 17.10, 17.12, 17.24, 17.25, 17.27, 17.30, 17.32.
Feb 9 and Feb 12 15.7, 15.9, 15.12, 15.17-15.19, 15.21, 17.14, 17.15*, 18.11*-18.14, 19.1, 19.2-19.5, 19.7, 19.14, 19.15, 19.21=V19.19, 19.22=V19.20, 19.23=V19.21, 19.27=V19.25, 19.32=V19.30, 19.34=V19.32, 21.5-21.10, 21.15-21.18, 21.26-21.28*, 21.34, 21.35.
Feb 16 and Feb 19 22.1, 22.2, 22.6, 22.12, 22.14, determine the quotient groups: (a) 4Z/12Z (b) R # /R >0 , 23.2, 23.4, 23,12, 23.12, 23.13, V23.20*, 56.5= V53.5, 56.6= V53.6, 56.8= V53.8, 56.9= V53.9, 57.5= V54.5, 57.13= V54.13, 58.1= V55.1, 58.2=V55.2, 58.7= V55.7.
Feb 23 and Feb 26 25.1, 25.4, 25.5, 25.7, 25.21, 26.1-26.9, 26.13, 26.18, 26.23*, 27.20*, 27.21, 27.23, 34.6, 34.8, 35.4-35.6, 35.9, 35.12, 35.13, 35.18, 36.1, 36.9, 36.11, 36.12, 36.22*-36.24*, 37.2-37.5, 37.8.
March 2 and March 5

38.1-38.4, 38.9, 38.12-38.15, 38.18*-38.20*, 38.22, 38.24*, show that any R-ideal I which contains an invertertible element is equal to R, 39.1-39.4, 39.7, 39.8*-39.10*, 39.12*, 41.2,41.3, 41.12, 42.4, show that any field of characteristic 0 contains a subfield isomorphic to Q, determine the minimal polynomials for √2+√3 and i=√-1 over Q, 40.6-40.10, 50.3=V45.3, 50.4=V45.4, 50.5=V45.5.

March 9 and March 12 43.1= V44.1, 43.18= V44.18, 30.3, 30.8, 35.14. Let a≠0 and f(x) be a polynomial such that f(xn) is divisible by (x-a). Show that f(xn) is also even divisible by (xn -an).

Solutions to some exercises: Solution to the exercise on Cube.docx

Examination

Solution to the Home Exam (March 21st)

Solutions Algebra home exam March 2020.pdf

Information about the Algebra exam 2020.docx

For examples of previous exams, click here. MMG500 Mar 2017.pdf, MMG500 Jun 2017.pdf

Exam MMG500 Aug 2019.pdf

Solutions MMG500 Aug 2019 corrected.pdf (New Version!)

The dates, times and places for the exams are in the student portal (Links to an external site.).

### Examination procedures

At the annual (regular) examination:

When it is practical, a separate review is arranged. The date of the review will be announced here on the course homepage. Anyone who can not participate in the review may thereafter retrieve and review their exam at the Mathematical Sciences Student office (Links to an external site.). Check that you have the right grades and score. Any complaints about the marking must be submitted in writing at the office, where there is a form to fill out.

At re-examination:
Exams are reviewed and retrieved at the Mathematical Sciences Student office (Links to an external site.). Check that you have the right grades and score. Any complaints about the marking must be submitted in writing at the office, where there is a form to fill out.

### Course evaluation

At the beginning of the course, at least two student representatives should have been appointed to carry out the course evaluation together with the teachers. The evaluation takes place through conversations between teachers and student representatives during the course and at a meeting after the end of the course when the survey result is discussed and a report is written. Guidelines for Course evaluation (Links to an external site.) in Chalmers student portal.

#### Student representatives

The following students have been appointed:

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