Update: The course will be taught in English.
Ankündigungen / Announcements
 12.05.2018: There were small errors in the definitions of axioms T_{3} and
T_{4} in Tuesday's lecture. They have been corrected in the lecture notes, but
the answer to Problem 7(c) on this week's problem set may depend on these details,
so correct answers conforming to either set of definitions (from the lecture or the notes) will
be accepted. There were also some errors in the discussion of connected components
in Friday's lecture, which have also been corrected in the lecture notes. Look out for
red text in the notes where the corrections have been flagged.
 23.04.2018: The following minor changes take effect as of this week: (1) The Friday lectures are moving
to room 1.013 (directly underneath where we met in the first week). (2) My office hour is now
Thursdays 14:0015:00 instead of Wednesdays. These details have been updated in the downloadable course information sheet
at the top of this page.
previous announcements (no longer relevant)
lecture notes (updated regularly)
Übungsblätter / Problem sets
The grader for this course is Johannes Hauber; you can contact him at
hauberjq at hu dash berlin dot de if you have questions
about your graded homework.

Somebody miscalculated the fundamental group.
(Hermannplatz, 8.06.2017)
