Plan/log

Date Themes Reference
Log of what we have covered
23.08 (Thursday) Introduction, definitions, various examples of rings (polynomial rings, ring of group endomorphisms, Boolean rings), and basic properties of rings. Chap 9.1, 9.2, 9.3
24.08 (Friday) Subrings, characteristic of a ring, idempotent and nilpotent elements, ideals Chap 9.4, 9.5, 10.1
30.08 (Thursday) Problem set 1 during second half. More ideals and homomorphisms, left ideals, right ideals, ideals in the full matrix algebra, Intersections of ideals Chap 10.1, 10.2
31.08 (Friday) Sums and direct sum of ideals, minimal, maximal and prime ideals, the real numbers as the rings of Cauchy-sequences modulo the ideal of sequences converging to zero Chap 10.3, 10.4
06.09 (Thursday)Problem set 2 during second half. The Chinese remainder theorem, Maximal ideals are prime, the maximal ideals of Z, C[x] and R[X], description of prime ideals for commutative rings. Chap 10.4, 10.5
07.09 (Friday) Nilpotent and nil ideals, Zorns's lemma and the existence of maximal ideals.Chap 10.5, 10.6
13.09 (Thursday) Problem set 3 during second half. Start modules and vector spaces.Chap 14.1, 14.2, 14.3
14.09 (Friday) Submodules, direct sums of submodules, R-homomorphisms and quotient modulesChap 14.3, 14.4
20.09 (Thursday)Simple modules, completely reducible modules, exercises to do in classChap 14.4
21.09 (Friday) Free modules, additional Examples from chapter 14 Chap 14.5, and examples 14.1-14.5
27.09 (Thursday) Present problem set 4 in class. Discuss Hom(R,R). 14.1-14.5
28.09 (Friday) Discuss Hom(M,M) where M is a direct sum of modules; Start noetherian and artinian modules Chap 19.1, 19.2
04.10 (Thursday)Present problem set 5 in class. Also discuss exact sequences and commutative diagrams.Ch. 14
05.10 (Friday)Noetherian and artinian modules, continued. 19.2
11.10 (Thursday) Finish more of 19.2 including results on nil and nilpotent ideals Chap 19.2
12.10 (Friday)Start discussing Problem set 6, Wedderburn-Artin + examples 19.2, 19.3
18.10 (Thursday) More examples illustrating Wedderburn-Artin's theorem and modules of finite length. 19.2, 19.3
19.10 (Friday) Smith normal form 20.1-20.3
25.10 (Thursday)Present problem sets 6 and 7 in class.
26.10 (Friday) NO CLASS – complete Problem set 8 out of class. I would suggest finding a quiet place during class time and seeing how far you can get on these 5 exam problems during 2 hours.
01.11 (Thursday) Decomposition of finitely generated modules over PID 21.1-20.2
02.11 (Friday)Decomposition and applications to finitely generated abelian groups20.2-20.3
08.11 (Thursday)Applications to finitely generated abelian groups; Rational canonical form20.3, 21.3, 21.4
09.11 (Friday)Rational canonical form, generalized Jordan form21.1-21.5
15.11 (Thursday)Do problem set 10 (out of class - NO CLASS this day)
16.11 (Friday)Present problem set 9 in class.
Future plans
22.11 (Thursday)Review course material and what will be covered on the final exam, cover problems from 2015 exam
23.11 (Friday)Additional review problems, go over questions from any old exams or problem sets
2018-11-21, pedertho