Being a weblog devoted to a variety of topics. Including Mathematics. And Mathematical Finance. Sometimes with homework.

Tuesday, March 30, 2010


...joins the Tautology Club.

Thursday, March 25, 2010

21-241: Week #11

The reading and homework assignments for Week #11 have been posted. You can follow the link from the Schedule page.

Tuesday, March 23, 2010


...explores the limits of logical deduction.

Friday, March 19, 2010

21-241 Week #10

The reading and homework assignment for Week #10 has been posted. There are two "homemade" problems and five from the text.

UPDATE: The homework assignment for Week #10 will be due on Wednesday, as usual, not Friday, like last week. The assignment page was incorrect, but it is fixed now.

Tuesday, March 16, 2010


An interesting description of the Collatz Conjecture.

Monday, March 8, 2010

21-241: Week #9

I didn't get the assignment for Week #9 posted until today, so rather than the normal Wednesday deadline, the assignment will be due on Friday, March 19, That will give you a little more time to work on it.

UPDATE: Problem 3.3.35 and 3.3.36 refer to "the same four points." They mean the points in problems 3.3.32 and 3.3.33, i.e. the points (t,b) in {(0,0), (1,8), (3,8), (4,20)}. Sorry for the confusion.

Tuesday, March 2, 2010

Pittsburgh Snowstorm

I just ran across this movie filmed after our big snowstorm in early February. It's got pretty good production values, and is entertaining, if you like that sort of thing.

Monday, March 1, 2010

21-241: Final Exam

Our Final Exam will be given on Friday, May 7, from 5:30-8:30pm. Please make sure that your travel plans do not require you to leave campus before the end of the exam. No student will be permitted to take the final exam early.

21-241: Exam #1

I returned the exams in class today. The grade cutoffs for Exam #1 were as follows:

A: >80

B: 65-79

C: 50-64

D: 35-49

Here are a wide range of statistics for the course so far. Solutions to the exam are available in the Assignments section of the Blackboard site.