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July 6 - July 10

Conference, Applied Category Theory (ACT 2026, Estonia) Talk

schedule TBD, more info soon!

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Latest Books

Unequal

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

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

‘Playful and deeply serious … shows how exploring equality in maths may help the real world’ NEW SCIENTIST

‘Eugenia Cheng has humour, grace and a natural gift’ DANIEL LEVITIN

‘Clear, clever and friendly…even at her most whimsical, she is rigorous and insightful’ ALEX BELLOS

At first glance, the concept of equality in maths seems unambiguous. When we see the equality sign, we think of ‘solving for x’ or balancing two sides of an equation or maybe even the many famous equations that make use of this elegant, innocuous symbol.

But between those parallel lines lies a mathematical playground of choice and abstraction, leading to far greater insight than you could have dreamed. As it turns out, sameness and difference, equality and inequality, are not nearly as straightforward as they seem.

Unequal explores the rich and rewarding interplay between sameness and difference, from numbers to manifolds to category theory and beyond in a glorious celebration of mathematics that will change the way you look at maths – and the world around you – forever.

Is Maths Real?

How Simple Questions Lead Us to Mathematics’ Deepest Truths

One of the world’s most creative mathematicians offers a new way to look at math—focusing on questions, not answers

Where do we learn math: From rules in a textbook? From logic and deduction? Not really, according to mathematician Eugenia Cheng: we learn it from human curiosity—most importantly, from asking questions. This may come as a surprise to those who think that math is about finding the one right answer, or those who were told that the “dumb” question they asked just proved they were bad at math. But Cheng shows why people who ask questions like “Why does 1 + 1 = 2?” are at the very heart of the search for mathematical truth.

Is Math Real? is a much-needed repudiation of the rigid ways we’re taught to do math, and a celebration of the true, curious spirit of the discipline. Written with intelligence and passion, Is Math Real? brings us math as we’ve never seen it before, revealing how profound insights can emerge from seemingly unlikely sources.

Profile Books (UK), Basic Books (US)

Also by Eugenia

How to Bake Pi: An Edible Exploration of the Mathematics of Mathematics

In How to Bake Pi, math professor Eugenia Cheng provides an accessible introduction to the logic and beauty of mathematics, powered, unexpectedly, by insights from the kitchen. We learn how the béchamel in a lasagna can be a lot like the number five, and why making a good custard proves that math is easy but life is hard.

The Art of Logic:
How to Make Sense in a World that Doesn’t

Emotions are powerful. In newspaper headlines and on social media, they have become the primary way of understanding the world. But strong feelings make it more difficult to see the reality behind the rhetoric. In The Art of Logic, Eugenia Cheng shows how mathematical logic can help us see things more clearly – and know when politicians and companies are trying to mislead us.

First Cheng explains how to use black-and-white logic to illuminate the world around us, giving us new insight into thorny political questions like public healthcare, Black Lives Matter and Brexit. Then she explains how logic and emotions, used side-by-side, can help us not only to be more rational individuals, but also to live more thoughtfully.

Clear-sighted, revelatory and filled with useful real-life examples of logic and illogic at work, The Art of Logic is an essential guide to decoding modern life.

About Eugenia

Dr Eugenia Cheng is Scientist In Residence at the School of the Art Institute of Chicago. Alongside her research in Category Theory and undergraduate teaching her aim is to rid the world of “math phobia”. Her first popular math book, How to Bake Pi, was published by Basic Books in 2015 to widespread acclaim. Her next book, Beyond Infinity, was published in 2017. Eugenia is also math columnist for the Wall Street Journal, a concert pianist and founder of the Liederstube.

Upcoming Talks

Preston Maths School, School Talk
June 20
Exeter Maths School, School Talk
June 22
Kings Maths School, School Talk
June 26
Cambridge Maths School, School Talk
June 30

Upcoming Concerts

SUMM, Concert and presentation with Prof Dave Kung (mathematician/violinist)
January 12, 2027
JMM 2027 – Music Event, details TBC
January 12, 2027 - January 15, 2027

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