11/13/03: I have added a few items to the topics list. Go and
take a look!
11/13/03: I have added a few items to the topics list. Go and
take a look!
11/09/03: I have graded Problems 2, 4, 5, 6, 9, 11, and 13
from Problem Set 2. The mean on Problem Set 2 was 47.4, the median 54,
the top score 68, out of 70.
10/29/03: I have corrected a= b + ... to a + b + ... in
Problem 7 of Problem Set 2. Thanks to Hazem Hamdan!
10/17/03: The Problem Set 2 is posted. Go and check it
out!
10/10/03: The mean on Problem Set 1 was 40.25, the median 42,
out of 50.
10/09/03: I have finally started to write a list of topics for
your talks. Unfortunately, most of them deal with commutative AND
homological algebra, and are therefore more suitable for the second
semester.
10/07/03: I have to move my office hours down by half-an-hour
this Wednesday, October 8, to 11:30-12:30 because of a dentist's
appointment.
09/30/03: Promised hint to Problem 2.23 from Eisenbud. It is a
hint to the hint at the end of the textbook. Assume I is not prime,
that is there are two elements f and g not in I, such that fg is in
I. Then (I,f) = (a) for some a. Then I = a(I:a) = (a) (I:a). Show that
this factors I in the product of ideals strictly larger than I (look
where f and g are!) and deduce that I is principal.
09/23/03: Skip FLT (Problem 2) from Problem Set 1. I have
posted the second part of the problem set, see my comments on how to
prove FLT there, if you are interested.
09/22/03: I have permanently moved my Thursday office hours to
11-noon, because of a new schedule of departmental seminars.
09/14/03: I have posted still other version of the first
problem set, Part I. I rushed with posting the first one, while I was
on the go in the morning. Sorry about the confusion.
09/14/03: I have posted a corrected version of the first
problem set, Part I. I am grateful to Javier Zuniga for pointing out
an inaccuracy in Problem 6. Good for him:-)
09/10/03: I have just posted Part I of the first problem
set. I cannot include problems from Eisenbud at this moment, because I
had to postpone typing this problem set till I get home and at home
realized I had left Eisenbud in my office. I will be gone tomorrow
morning for Cincinnati and add a few problems from Eisenbud around
September 22-23.
09/10/03:
I have permanently moved my Wednesday office hours to 11-noon to
accommodate the
schedules of some of the students.
09/08/03:
I have to cancel the classes on Wednesday and Friday, September 17 and
19, because of a school in Spain.
09/08/03:
I have to cancel my office hours Thursday, September 11, and
Wednesday
and Thursday, September 17 and 18, because of my being out of town at
conferences.
09/05/03:
I have to cancel the class on Friday, September 12, because of a
conference in Cincinnati. I will post homework for you to be busy with
while I am away.
09/02/03:
I may be late for my office hours 2:30-3:30 pm Thursday,
September 4, because of a meeting. I should be in my office at least
by 3 pm, though. Sorry about the inconvenience.