Ideal for a one- or two-semester undergraduate-level course, this Second Edition:

• Features a more flexible structure that offers a greater range of options for course design
• Adds new sections on the representations of integers and the Chinese remainder theorem
• Expands exercise sets to encompass a wider variety of problems, many of which relate number theory to fields outside of mathematics (e.g., music)
• Provides calculations for computational experimentation using SageMath, a free open-source mathematics software system, as well as Mathematica® and Maple(TM), online via a robust, author-maintained website
• Includes a solutions manual with qualifying course adoption

By tackling both fundamental and advanced subjects-and using worked examples, numerous exercises, and popular software packages to ensure a practical understanding-Introduction to Number Theory, Second Edition instills a solid foundation of number theory knowledge.