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The Clip Corner service is currently unavailable due to technical problems. We're working to resolve these as soon as possible. We apologise for any inconvenience caused.
It's possible that we'll be unable to access some archival collections during the next few weeks. If you'll be visiting during this period, we kindly ask that you order any archival material as soon as possible. We apologise for any inconvenience caused.
'The Whetstone of Witte' was published in 1557 and written by the influential Welsh mathematician and teacher Robert Recorde. It is in this book that algebra and the equals sign (=) are introduced for the first time in published form.