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Carus Mathematical Monographs #11

An Introduction to the Theory of Numbers

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The Fifth Edition of one of the standard works on number theory, written by internationally-recognized mathematicians. Chapters are relatively self-contained for greater flexibility. New features include expanded treatment of the binomial theorem, techniques of numerical calculation and a section on public key cryptography. Contains an outstanding set of problems. Contents same as US/UK editions.

544 pages, Paperback

First published January 28, 1956

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Ivan Niven

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5 stars
28 (42%)
4 stars
26 (39%)
3 stars
7 (10%)
2 stars
3 (4%)
1 star
2 (3%)
Displaying 1 - 8 of 8 reviews
11 reviews12 followers
February 12, 2020
A tough book. I didn't like the style of the book too much to say the least.
Let's begin with the positives. The book is designed geniously. Each chapter is almost self-contained barring few basic ideas that any college undergrad ought to know. Kudos for that. Each topic is covered in almost excruciating detail- at times a positive, at times not. The author has introduced, to my understanding, every tool and concept any undergrad needs to be aware of after taking a first course in number theory. I cannot stress enough the breadth and depth that this book covers. Marvelous. One star just for that.

My issues with the book, are ironically regarding the writing style. I find the book too scattered. Maybe because I used an e-book but at times the book is extremely unclear. To cite an example, an exercise in the section dealing with elliptic curves left me completely perplexed. I didn't know at what times the author was referring to a particular example and when he made a statement with regards to a theorem. Besides elliptic curve, I found the Farey sequences a bit too difficult to grasp.

Having said all of that, I find it slightly difficult to enumerate every topic covered in the book but you can easily get a table of contents online. I would recommend this book if you're a Math major. This is one book you must have on introductory number theory if you want just one.
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320 reviews81 followers
March 31, 2008
I read this book because a professor of mine, who was retiring, gave me this book because I had displayed an interest in the material. That professor was really good. I became a math major as a direct result of that action.

I learned about the elementary theory of congruences from this book. But it is referenced everywhere. I plan to read through more topics in this book later.

I have heard that it has an awesome discussion of the theory of continued fractions.
29 reviews6 followers
April 20, 2007
the go-to book for undergrad number theory.
18 reviews
October 4, 2016
My favorite book on my shelf, if it ever had occasion to spend much time there.
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532 reviews19 followers
August 18, 2017
I suppose it was a kind of arrogant, perverse madness that made me order this from the library's web-facility. I managed the Introduction [illuminating!]. Nuf confessed.
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105 reviews19 followers
October 31, 2019
A very nice introduction to the theory of numbers starting with the fundamental theorem of number theory and then navigating through the basic topics reaching quadratic forms in a very nice treatment in addition to elementary topics in elliptic curves. I would recommend it for those who want to learn the number-theoretic approach to quadratic forms and their properties. The problems are well-thought of and are very beneficial for students to solve.
150 reviews
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January 6, 2024
The decimal expansion of 1/p has period p-1 if and only if 10 is a primitive root of p.
Displaying 1 - 8 of 8 reviews

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