Graphic Guides

A Graphic Guide

Jerry Ravetz, Ziauddin Sardar, Borin Van Loon

• Publisher: Icon Books
• Year: 2015
• ISBN:
  9781848319691
• Topic: Matemáticas
• Subtopic: Matemáticas general

What is mathematics, and why is it such a mystery to so many people? Mathematics is the greatest creation of human intelligence. It affects us all. We depend on it in our daily lives, and yet many of the tools of mathematics, such as geometry, algebra and trigonometry, are descended from ancient or non-Western civilizations. Introducing Mathematics traces the story of mathematics from the ancient world to modern times, describing the great discoveries and providing an accessible introduction to such topics as number-systems, geometry and algebra, the calculus, the theory of the infinite, statistical reasoning and chaos theory. It shows how the history of mathematics has seen progress and paradox go hand in hand - and how this is still happening today.

WHY MATHS?

Everybody moans at the very mention of “maths”. People think that the world is divided into two kinds of folks. The “brainy” lot who understand mathematics but are not the kind of people one wants to meet at parties...

...and the rest of us!
Just keep your eyes open for any mathematicians O.K.?

But all of us need to understand maths to some extent. Without mathematics, life would be inconceivable.

We need maths when we go shopping, check our bills, manage household finances...
...and run our businesses.

We need maths to build our houses...

...insure our cars, do our banking.
We need maths to make maps so we can find our way around cities...
...travel around the world, even go out into space!

Thus, mathematics is the engine that runs our industrial civilization.
It is the language of science, technology and engineering.
It is essential for architecture and design as well as economics and medicine.
Even art relies on mathematics to some extent.

Indeed, mathematics has become a guide to the world in which we live, the world which we shape and change, and of which we are a part. And as the world becomes more and more complex, and uncertainties in our environment become more urgent and threatening, we need mathematics to describe the risks we face and to plan our remedies.

The ability to deal with mathematics does require a special talent and skill – like any other field of human endeavour, such as dancing. Just as an accomplished ballet performance is sophisticated and exquisite, so is mathematics in its essence very elegant and beautiful.

But even though most of us cannot become fully-fledged ballet performers, all of us know what it is to dance and virtually all of us can dance. Similarly, all of us should know what mathematics is about, and be able to understand and handle certain basic steps.

Fear of maths is like of dancing.
Both are overcome by a little bit of practice.

Music is the pleasure the human soul experiences from counting without being aware that it is counting.

COUNTING

To some extent, young beginners at mathematics retrace the steps of humanity in the development of mathematical knowledge.

At school, children learn to count, to calculate, and to measure. Once they have been learned, these techniques may seem “elementary”. But for the learners they are full of mystery.

The naming of numbers becomes an incantation, especially when we get to the bigger ones. Counting to a hundred becomes tedious, but getting to a thousand is like climbing a mountain! What is the last number, the biggest one of all?

If there isn’t such a thing, then what is there at the end?

How do we name the numbers, as we call them out one after another? Perhaps just a few numbers are enough. Some animals can recognize different collections up to five or seven – beyond that it’s just “many”. But if we know that numbers go on continuously, we can’t just keep inventing new names indefinitely as we go along.

The language of the Dakota Indians was not written down.

So we counted the years and marked special events in our history by keeping a winter count like this one.

It is made of cloth and the pictographs are drawn in black ink. Each year a new pictograph was added to show the main event of the past year.

The best way to systematize naming and counting is to have a “base”, a number that marks the beginning of counting again. The simplest base is just two. For example, the Gumulgal, an Australian indigenous people, counted like this:

1 = urapon

2 = ukasar

3 = urapon-ukasar

4 = ukasar-ukasar

5 = ukasar-ukasar-urapon

This may seem primitive and tedious.
But the base two, in the form of 0’s and 1’s ...
...is built into digital computers as the foundation of all their calculations.

The fingers of the hands are useful for defining bases. Some systems use five, more common is ten. But many other bases can be used. The old British currency had several: twelve (pence per shilling) and then twenty (shillings per pound) and even twenty-one (shillings per guinea!). Shop assistants needed to keep reckoning books by their sides. And when people bought in instalments, they might be told that th...

Table of contents

• Cover
• Title Page
• Copyright
• Contents
• Why Maths?
• Further Reading
• The Authors
• Index