© 2019 Alexandre Borovik and Tony Gardiner
This work is licensed under a Creative Commons Attribution 4.0 International license (CC BY 4.0). This license allows you to share, copy, distribute and transmit the work; to adapt the work and to make commercial use of the work providing attribution is made to the author (but not in any way that suggests that they endorse you or your use of the work). Attribution should include the following information:
Alexandre Borovik and Tony Gardiner, The Essence of Mathematics through Elementary Problems. Cambridge, UK: Open Book Publishers, 2019.
http://dx.doi.org/10.11647/OBP.0168
Further details about CC BY licenses are available at http://creativecommons.org/licenses/by/4.0/
All external links were active on 10/04/2019 and archived via the Internet Archive Wayback Machine: https://archive.org/web/
Every effort has been made to identify and contact copyright holders and any omission or error will be corrected if notification is made to the publisher.
Digital material and resources associated with this volume are available at https://doi.org/10.11647/obp.0168\#resources
This is the third volume of the OBP Series in Mathematics:
ISSN 2397-1126 (Print)
ISSN 2397-1134 (Online)
ISBN Paperback 9781783746996
ISBN Hardback: 9781783747009
ISBN Digital (PDF): 9781783747016
DOI: 10.11647/OBP.0168
Cover photo: Abstract Spiral Pattern (2015) by Samuel Zeller, https://unsplash.com/photos/j0g8taxHZa0
Cover design by Anna Gatti.