# The World of Whole Numbers: Number Theory for the Novice

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* The World of 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 two years of high school algebra. Rather than giving brief introductions to a wide variety of topics, this book provides an in-depth introduction to the field of Number Theory. The topics covered include material in an introductory Number Theory course for mathematics majors, but the presentation is carefully tailored to meet the needs of elementary education, liberal arts, and other non-mathematical majors with a minimal mathematical background. The text covers logic and proofs, so that students may understand how to prove mathematical statements and to give counterexamples when statements are false. The book contains an abundance of worked examples and exercises to both clearly illustrate concepts and evaluate the students’ mastery of the material. The text is enhanced with historic notes, biographical sketches and links to videos that reiterate what is presented in the text.

*Testimonial*

*Preface to the Instructor*

*What’s New in the Third Edition*

*Preface to the Student*

*Acknowledgments*

*About the Author*

**Chapter 0 Introduction **

**Chapter 1 Conjectures, Proofs and Counterexamples **

**Chapter 2 Pythagorean Triples **

**Chapter 3 Prime Numbers and Unique Factorization **

**Chapter 4 The Euclidean Algorithm**

**Chapter 5 Congruences **

**Chapter 6 Special Congruences and Numerical Functions **

**Chapter 7 Cryptography **

*Bibliography*

*Epilogue*

*Index*

Inspired teaching of General Education courses is a challenging task due to a student audience that often is not interested in the subject matter. Similarly, high school mathematics teachers lack enrichment courses other than calculus. ** The World of Whole Numbers - Number Theory for the Novice** is the book that evolved from the extensive practice and research of Dr. Agnes M. Rash. Its latest edition is a wonderful treatment of the Number Theory, with a broad range of innovative problems and mathematical proofs for nonmathematics majors or advanced high schoolers.

The book begins with a presentation of mathematical problem-solving strategies and methods of communicating mathematical ideas. It is a distinguishing feature for a typical mathematics textbook that allows students to learn how to study mathematics.

As an introductory Number Theory text, the book contains various types of learning tasks including puzzles, projects, real-life applications, and mathematical proofs. Each chapter contains numerous solved examples, proven statements, and practice exercises of varying degrees of difficulty. Also, each chapter concludes with a list of new terms and symbols, followed by review exercises and activities.

Humanizing mathematics is one of the methods for motivating students’ learning of the subject. Dr. Rash has included numerous historical facts and engaging stories, with pictures to illustrate the evolution of human thought and power of its knowledge.

** The World of Whole Numbers - Number Theory for the Novice** is an opportunity to foster important development of mathematical and analytical thinking intended for a novice audience. The book will introduce the student to some of the genesis of mathematical algorithms including Euclidean, the Sieve of Eratosthenes, generation of primes and many others.

The instructor teaching from this book will find it an invaluable course book for capstone problem-solving or first-year seminar courses, enrichment courses, and a springboard for a number of interesting number theory projects, term papers, or honors studies.

Dr. Tetyana Berezovski

Saint Joseph’s University

Mathematics Department

2019

* The World of 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 two years of high school algebra. Rather than giving brief introductions to a wide variety of topics, this book provides an in-depth introduction to the field of Number Theory. The topics covered include material in an introductory Number Theory course for mathematics majors, but the presentation is carefully tailored to meet the needs of elementary education, liberal arts, and other non-mathematical majors with a minimal mathematical background. The text covers logic and proofs, so that students may understand how to prove mathematical statements and to give counterexamples when statements are false. The book contains an abundance of worked examples and exercises to both clearly illustrate concepts and evaluate the students’ mastery of the material. The text is enhanced with historic notes, biographical sketches and links to videos that reiterate what is presented in the text.

*Testimonial*

*Preface to the Instructor*

*What’s New in the Third Edition*

*Preface to the Student*

*Acknowledgments*

*About the Author*

**Chapter 0 Introduction **

**Chapter 1 Conjectures, Proofs and Counterexamples **

**Chapter 2 Pythagorean Triples **

**Chapter 3 Prime Numbers and Unique Factorization **

**Chapter 4 The Euclidean Algorithm**

**Chapter 5 Congruences **

**Chapter 6 Special Congruences and Numerical Functions **

**Chapter 7 Cryptography **

*Bibliography*

*Epilogue*

*Index*

Inspired teaching of General Education courses is a challenging task due to a student audience that often is not interested in the subject matter. Similarly, high school mathematics teachers lack enrichment courses other than calculus. ** The World of Whole Numbers - Number Theory for the Novice** is the book that evolved from the extensive practice and research of Dr. Agnes M. Rash. Its latest edition is a wonderful treatment of the Number Theory, with a broad range of innovative problems and mathematical proofs for nonmathematics majors or advanced high schoolers.

The book begins with a presentation of mathematical problem-solving strategies and methods of communicating mathematical ideas. It is a distinguishing feature for a typical mathematics textbook that allows students to learn how to study mathematics.

As an introductory Number Theory text, the book contains various types of learning tasks including puzzles, projects, real-life applications, and mathematical proofs. Each chapter contains numerous solved examples, proven statements, and practice exercises of varying degrees of difficulty. Also, each chapter concludes with a list of new terms and symbols, followed by review exercises and activities.

Humanizing mathematics is one of the methods for motivating students’ learning of the subject. Dr. Rash has included numerous historical facts and engaging stories, with pictures to illustrate the evolution of human thought and power of its knowledge.

** The World of Whole Numbers - Number Theory for the Novice** is an opportunity to foster important development of mathematical and analytical thinking intended for a novice audience. The book will introduce the student to some of the genesis of mathematical algorithms including Euclidean, the Sieve of Eratosthenes, generation of primes and many others.

The instructor teaching from this book will find it an invaluable course book for capstone problem-solving or first-year seminar courses, enrichment courses, and a springboard for a number of interesting number theory projects, term papers, or honors studies.

Dr. Tetyana Berezovski

Saint Joseph’s University

Mathematics Department

2019