A Pythagorean Introduction to Number Theory Right Triangles, Sums of Squares, and Arithmetic

“The book reads well. … I would think this would be an enjoyable book from which to teach, since it covers the standard material in the way in which mathematics is done by asking questions and then developing the theory necessary for answering the questions. … All in all, this is a very good antidote to the definition-theorem-proof approach to introductions to various subdisciplines of mathematics.” (Duncan A. Buell, Mathematical Reviews, February, 2020)

“The present book has a high didactic quality being a detailed proof that number theory is ‘a field of study that sits at the crossroads of many branches of mathematics, and that fact makes a prominent appearance in this book’ as is pointed out in Preface. … this book develops step by step a large number of techniques to solve a lot of number theoretic problems. ... this book is an excellent source for all readers interested in number theory.” (Mircea Crâşmăreanu, zbMath 1410.11002, 2019)