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The authors receive no royalties from the sale of printed copies of this book. Printed editions are priced to cover only printing, distribution, and platform costs.

 

If you found the book useful and are able and inclined to do so, please consider making a voluntary donation to one of these charities:

  • SAMI: UK-based charity dedicated to improving access to and quality of mathematics education in Africa. It supports initiatives such as maths camps and clubs at school and university level, as well as technological developments in mathematics and statistics.

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Such donations are entirely optional and are not required to access, share, print, or use the book under the terms of the license.

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