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Introduction to Inequalities Paperback – June, 1975

by Edwin F. Beckenbach (Author), R. Bellman (Author)

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Most people, when they think of mathematics, think first of numbers and equations-this number (x) = that number (y). But professional mathematicians, in dealing with quantities that can be ordered according to their size, often are more interested in unequal magnitudes that areequal. This book provides an introduction to the fascinating world of inequalities, beginning with a systematic discussion of the relation "greater than" and the meaning of "absolute values" of numbers, and ending with descriptions of some unusual geometries. In the course of the book, the reader wil encounter some of the most famous inequalities in mathematics.--This text refers to an out of print or unavailable edition of this title.

--This text refers to an out of print or unavailable edition of this title.

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Product Details

Paperback
Publisher: Random House Inc (P) (June 1975)
Language: English
ISBN-10: 0394015592
ISBN-13: 978-0394015590
Product Dimensions: 9 x 5.9 x 0.5 inches
Shipping Weight: 7.8 ounces
Average Customer Review: 4.2 out of 5 stars See all reviews (4 customer reviews)
Amazon Best Sellers Rank: #14,909,070 in Books (See Top 100 in Books)
- #3807 in Books > Science & Math > Mathematics > Popular & Elementary > Arithmetic

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30 of 30 people found the following review helpful

An interesting study of inequalities.

By N. F. Taussig on July 11, 2004

Format: Paperback

This text provides an introduction to the inequalities that form the basis of real analysis, the theoretical foundation for calculus. The authors' treatment requires careful reading since there are many details to check in the derivations of the inequalities and the examples in which those inequalities are applied. In places, I found myself writing annotations in the margins where I found the presentation somewhat incomplete. Checking the details in the authors' exposition and completing the exercises, for which there are answers and hints in the back of the book, is essential for understanding the material.

The text begins with an axiomatic introduction to inequalities. The authors then prove some basic properties of inequalities. The subsequent chapter on absolute value discusses several ways in which absolute value can be interpreted. The most important chapter in the text is one in which some of the most important inequalities in real analysis are derived. In the final chapters of the text, these inequalities are applied to optimization problems and the definition of distance.

The derivations are fascinating, if somewhat ingenious. The authors show the geometric basis of some of the inequalities, a topic the reader can explore further by reading Geometric Inequalities (New Mathematical Library) by Nicholas D. Kazarinoff. Also, the authors show how inequalities can be used to solve problems for which most readers will have been taught quite different methods of solution.

The exercises range from basic computations to proofs for which some ingenuity is required. I wish there were more exercises in the latter chapters of the text to help put the inequalities derived there in context.

The text is a rewarding look at a critical topic in higher mathematics.

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21 of 22 people found the following review helpful

Enlivens the Study of Inequalities - From Fundamentals to Classical Inequalities to Min - Max Problems

By Michael Wischmeyer on April 11, 2008

Format: Paperback

An Introduction to Inequalities is an unexpectedly delightful book. Relatively brief, only 129 pages, this publication of The Mathematical Association of America, requires no more than basic high school mathematics. Nonetheless, I am convinced that Edwin Beckenbach's and Richard Bellman's systematic study of inequalities would interest most students in an early calculus course.

The first two short chapters establish an axiomatic framework for the algebra of inequalities that should be familiar to most readers. Even so, it best not to skip the nine problems at the end of chapter 2 as the results will play important roles in later chapters.

Chapter 3, Absolute Value, offers an interesting look at what I had generally considered to be a prosaic topic. Beginning with a straight-forward definition, the authors derive some half-dozen expressions for the absolute value. This discussion leads to the triangle inequality (one-dimensional case).

The next chapter, The Classical Inequalities, is a gem. (Many readers could probably go directly to chapter 4, but the first three chapters are quick reading in any case.)

Some classical inequalities were familiar, like the arithmetic mean - geometric mean inequality and the Cauchy inequality (two-dimensional version). But others like the n-dimensional version of the Cauchy inequality (along with the Cauchy-Lagrange identity), the Holder inequality, and the Minkowski inequality were new to me. What I found most surprising was how these classical inequalities were so interrelated, and how some can be considered generalizations of others. Beckenbach and Bellman introduce clever substitutions to transform one inequality expression into another.Read more ›

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16 of 17 people found the following review helpful

Well written book

By RJ on August 21, 2000

Format: Paperback

It is a very easy book to read. I read it over a six hour flight. It starts with the very basics and takes one through to the most important of inequalities in Mathematics. While inequalities themselves can seem quite uninteresting, this book makes them interesting by focussing on the methodology used to arrive at them and the interesting results that they yield. The book is written in an easy converstational style, and intends to impart the reader not only with the knowledge of some basic inequalities but the authors also succeed in sharing some of the charm and fascination that they hold for pure Mathematics.
I recommend it highly.

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1 of 8 people found the following review helpful

Good God!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

By David Reynolds on May 25, 2013

Format: Paperback Verified Purchase

Now folks, I thought I liked inequalities. But I have nevah!!!!! been exposed to inequalities like this. We got this little volume to supplement homeschoolin' th kiddies. I always go through th books Momma picks ta teach th little scholars and this was no exception. But before I had got through three chapters I knew we had us a gold-mine. Now I'm th one that teaches th STEM courses at our house; Momma does th Humanities and I saw th potential with this book. Well, sure enough when we got to th triangle inequality th little 'uns was squealin about how they didn't understand it. Now folkz, if ya want ta know anything about math ya got to get through linear and if ya want ta get through linear ya got ta get the triangle inequality. If ya don't believe me jest keep addin and subtractin' fractions and stay out o th way o th big boys, we'll handle it. Well we just backed up and started at th beginnin of this book makin sure we laid th groundwork for the triangle inequality with the definitions and theorems and sure enough when we hit the triangle inequality in this volume it was "katy bar th door". My little 'uns are doin inequalities problems so hard they make G. H. Hardy look like a wanker. S***! And we haven't slowed down since. Now I look ahead and can find where we're going to have trouble with inequaliteies and we head that off before we get there. This book is great!!!!!!!!!!!!!!!!

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