MATH 145 Lecture Notes
Chapter 1. Mathematical Statements
Chapter 2. Mathematical Proof
Chapter 3. Rings Fields and Orders
Chapter 4. Recursion and Induction
Chapter 5. Factorization of Integers
Chapter 6. Congruences and Modular Arithmetic
Chapter 7. Cryptography
Chapter 8. Complex Numbers
Chapter 9. Cardinality
Chapter 10. Factorization in Rings
Appendix 1. The Construction of the Real Numbers