Dr. Dan Fretwell

Current:

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I am currently teaching the following module at Lancaster: 

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• MATH320 - Mathematical Cryptography

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In the past I taught the following modules at Lancaster: 

 

• MATH272 - Probability and Matrix Methods

• MATH328 - Number Theory​​​

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Previous:

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Here are the notes for part one of the module "Topics in Discrete Mathematics" for 2021/22 in Bristol. These notes present a basic course in mathematical cryptography. Exercise Sheet, Solutions.

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Here are the notes for part one of the module "Topics in Discrete Mathematics" for 2017/18 in Bristol. These notes present a basic course in coding theory. Exercise Sheet 1, Solutions 1, Exercise Sheet 2, Solutions 2, Practice Exam, Practice Exam Solutions.

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During my PhD in Sheffield I lectured the module MAS430 - Analytic Number Theory. Here are the course notes, exercises and solutions.

 

I also gave many tutorials and group sessions in a wide variety of pure maths modules. While tutoring the module MAS208 - Topics in Number Theory I wrote a short revision aid for proving infinitude of primes in arithmetic progressions for small parameters.

 

As part of the module MAS328 - Codes and Cryptography I offered two cipher challenges on classical techniques (Challenge 1, Challenge 2). I also created a sheet on simple RSA weaknesses. Here are the solutions.

 

Here are the notes for an unofficial set of Galois theory lectures that I gave. Here are some (incomplete) exercises.

 

Here are some exercises on group theory that I prepared for some of my undergrad students.