This textbook presents an elementary introduction to number theory and its different aspects: approximation of real numbers, irrationality and transcendence pro

The Whole Truth About Whole Numbers is an introduction to the field of Number Theory for students in non-math and non-science majors who have studied at least t

An undergraduate-level introduction to number theory, with the emphasis on fully explained proofs and examples. Exercises, together with their solutions are int

These notes serve as course notes for an undergraduate course in number theory. Most if not all universities worldwide offer introductory courses in number theo