Number Theory (Math 471)
I have finally posted the solutions to Exam II, which includes the
exam itself. I apologize for the long delay. It was caused by a
makeup exam situation that has finally resolved.
Tuesdays and Thursdays,
from 8:30-9:30am, in LGRT 1115L.
Here are some programs for your convenience/entertainment value. They
are Perl scripts; you'll need to have that
working on your machine to make use of the programs. Some hints for
usage are contained in the source code.
- Caesar ("shift") cipher.
- Affine cipher.
- Here are some files related to frequency analysis in substition ciphers.
First we have the texts of Moby Dick, Emma,
and The Count of Monte Cristo.
- Next we have the analyses
of character frequencies in these files: M,
E, C.
- Finally we have the analyses of digraph frequencies in these files:
M, E, C.
- Here are the programs used to produce these tables: characters, digraphs.
Revised: Sun Dec 14 13:32:46 EST 2008
Paul Gunnells
gunnells at math dot umass dot edu