Prof. Dr. Jens Franke
SprechstundenFreitags, von 14.20 bis 15.20, in meinem Büro (1.026).
Vorlesung "Algebra I"The discussion of the results of the first exam is on Wednesday August 16 in room 0.011.
A few remarks about the principles I followed in assigning points and grades to the solutions. As I stated clearly, I was interested in the complete formulations of results from other parts the lecture used in the proof, in order to be able to check wheter you understand the precise assumptions under which the result you are using holds. Unfortunately, this was often disregarded. To limit the consequences of this for your grade, I interpreted "formulating the assumptions" liberally. Also, I decided not to punish the first shortcoming of this type and to limit the total number of points subtracted in such cases to two.
Not checking that the poset to which Zorn's lemma is applied in the solution to Problem 2 is non-empty was also included in the set of minor mistakes for which I decided not to punish the first occurance. On participant, unfortunately, checked the "bound on totally ordered chains"-part of the assumptions of Zorn's lemma only for countable chains. I would like to point out for all participants that this form of Zorn's lemma is wrong, the set of countable subsets of some uncountable set (like R), partially ordered by inclusion, being an obvious counterexample.
Seminar "Geometrische Konstruktionen und transzendente Zahlen."Das Seminar fand im Sommersemester 2016 für Studenten des zweiten Semesters statt. Um einen guten Anschluß an die Vorlesung "Lineare Algebra I" sicherzustellen, diente ein von mir selbst verfaßter Text als Grundlage des Seminares. Dieser soll hier weiterhin zur Verfüfung gestellt werden.