**Welcome to the class!
Class announcements and useful documents will appear here. New
material will be added at the top. Make it a habit to look here.**

**I'm going to try keeping
the lecture notes and an indication of the current assignments at the
top of the page: watch for other things that might appear below.
**

**Math 275**MWF 9-10:15 am**Math 406**TTh 9-10:15 am**Math 496**MTh 11 am-12:30 pm During this time I am in my office but my office is**closed**; I am teaching my independent study student at this time, and you can no more visit with me than you could if I were in a classroom. Please notice that the Friday meeting we started the semester with has been changed to Thursdays.**Math department tea and coffee time**Th 2-2:50 pm**Set theory seminar**W 3-4 pm MB124 (the location is only a reminder for myself; don't look for me there)**morning office half-hour**MTWThF 10:15-10:45 am You can see me directly after class for half an hour. Of course it takes me a certain amount of time to get to my office from my classes.**afternoon office hour**1:45-2:45 pm MTWF Notice that this office hour does not happen on Thursdays.**other times**I will generally arrive on campus at 9 am directly from home for my classes, so you will not usually find me in my office before classes. I expect to be usually on campus and usually in my office until 3 pm each day, and very often until 5 pm. If I am in my office and not with my independent study student, I will usually talk to you.

The remark about awarding bonus points to those who find typos remains valid. Exercise sets embedded in the notes are not to be understood as assigned until they acquire a 2015 due date, and assignments will also be noted on this class announcements page.

Here is a review sheet for Test I from the last time I taught the course, which I have now looked over and updated with my current thinking about your exam. I will post the Test I paper from the last time as soon as I get home: it seems to exist only on my laptop at home...

Here is Test I from Spring 2014.

here is my RSA message (which has an extra level of puzzlement: it is a picture!). Happy decryption!

**Here
are the lecture notes. I notice that there are some good note readers
out there, catching typos and other slips...keep it up! The notes
have been updated 4/28/2014, with the completion of the n=3 case of
Fermat's Last Theorem. I have not come up with creative thoughts
about homework related to that topic, so I will leave it to Dr.
Scheepers to give you your next homework assignment. It was
interesting to lecture it; do please read my proof, as in at least
one place it differs noticeably from my lecture (though overall the
plan is the same, including the strange order). I was unable to post
the Macys paper, but the essence of it is in the notes.**

**I will not be caught up
on homework grading tomorrow (I have been ambushed by a trip to the
mountains with my Significant Other followed immediately by the
Passover holiday) but I should have a new lecture out and a new
homework assignment for you to have fun with.**

**I have found ingredients
for the proof of the FLT with n=3. It is quite formidable: it remains
to be seen whether I am brave enough to present it!**

**Here
is my Euclidean algorithm spreadsheet calculator.**

**The Assignment posed
4/16/2014 and due 4/25/2014: Some problems from the other book I used
for the Rabin witness proof, which I will post in a file here;
30.1, 30.2, 30.3, 31.1, 31.2, 31.3**

**I am posting an
assignment now (4/6/2014, Sunday) though I have not yet updated the
notes. I hope I will have those ready by class Wednesday, and of
course what I said did (mostly) follow the book. Since I am posting
it Sunday the 6**^{th}**,
I am making it due Wednesday the 16**^{th}**
****rather than Friday
the 11**^{th}**.
**

**The Assignment: 21.2 (if
I did not assign it already), 23.2, 23.3 optional, 23.4, 23.5; 24.1a
(exploratory), 24.3 (do this as much by hand as possible), 24.4
(ditto), 24.8 (optional, encouraged, and I'll probably eventually
post one), 25.1, 25.2, 25.6 (I don't know the answer...) It is
possible that I will add a problem or two based on Wednesday's
lecture.**

**
**

**Test I will be on Friday
February 21**^{st}**.
See review sheet just below! Your fourth homework set will be
returned graded to you on Wednesday. The coverage of the test
includes the material in Homework 5, so make sure that you are armed
with questions on Wednesday!**

** HERE
is a review sheet for Test I. **

**The test has been
marked. The grade distribution (using a rather esoteric formula) was
100, 93, 72, 70, 65. I'll go over the test tomorrow.**

**Here
is the review sheet for the Test on March 21**^{st}**.**