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Unequal

Unequal

The Maths of When Things Do and Don't Add Up

by Eugenia Cheng
Hardback
Publication Date: 02/09/2025

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From Uniqueness to Set Theory and beyond, climb the mathematical ladder of sameness and difference with award-winning mathematician Eugenia Cheng

At first glance, the concept of equality in maths seems unambiguous. Denoted by two parallel lines, the equals sign looks elegant, simple and entirely black and white.

But between those two lines lies a grey area, a world of flexibility, creativity and innovation. And once you see this nuance, you quickly realise that sameness and difference, equality and inequality, are not nearly as immutable as they may seem. In fact, they are the opposite: a mathematical playground of choice and abstraction, leading to far greater insight than you could have dreamed.

In Unequal, Mathematician Eugenia Cheng explores the rich and rewarding world of the interplay between sameness and difference, from numbers to manifolds to category theory and beyond.a

ISBN:
9781805223061
9781805223061
Category:
Mathematics
Format:
Hardback
Publication Date:
02-09-2025
Language:
English
Publisher:
Profile Books Limited
Country of origin:
United Kingdom
Dimensions (mm):
216x135mm
Eugenia Cheng

Eugenia Cheng is Honorary Fellow in Pure Mathematics at the University of Sheffield and Scientist in Residence at the School of the Art Institute of Chicago.

She was educated at the University of Cambridge and did post-doctoral work at the Universities of Cambridge, Chicago and Nice. Since 2007 her YouTube lectures and videos have been viewed over a million times.

A concert pianist, she also speaks French, English and Cantonese, and her mission in life is to rid the world of maths phobia. She is the author of How to Bake Pi.

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