The Department of Mathematics and Statistics main site

MAT 543

Final exams have been graded, and (unofficial) course grades are
available through current grade below. I will not be posting solutions for
the final, but you are welcome to come by and ask about the problems.

Current Grade. Enter the last 4 digits of your affiliate id:

Extra programs to help with matrix operations in gp:
matrixops.gp.
Loading the file causes it to print a help message.
In fact, the majority of the file itself is the help message.
The programs let you do most
row/column operations - enough to put a matrix in Smith normal form where
you guide the process, but you don't have to do real nitty-gritty work.
For example, once you have the gcd of the rest of the matrix in the (i,i)
entry, you can use one command to clear out the rest of the ith row and
the ith column.

To experiment with factoring a given polynomial modulo several primes
$p$, there are a couple of programs below.
You will need access to the
algebra/number theory program gp,
so you may need to install it. It should already be on mathpost.
If you do need to install it, gp is free, and very good at computations.

The extra files to load are

frobs.gp
which contains gp programs for tabulating factorizations of a polynomial
modulo several primes p. Try commands such as

auts.gp
which contains some gp programs we aren't using (yet), but also has lots of
interesting polynomials in it. The polynomials a4 and
v4 are irreducible over Q, but factor modulo p
for every prime p.