Title
The Whetstone Of Witte,Used
Delivery time: 8-12 business days (International)
The sole edition of Robert Recorde's The Whetstone of Witte was printed at London by John Kingston in 1557. One of Recordes concerns in this book is to develop not only a means of representing powers of numbers, but also a means of naming them. Prior to the development of a numerical index notation, the names given to the powers was of considerable importance. Hence in these pages we find terminology which is now archaic, for instance the strange word zenzizenzizenzike, the name for the eighth power of a number. It is generally acknowledged that Recordes treatise on algebra, in the section entitled The arte of cossike numbers, is the first to be printed in the English language. Although this work owes much to the German mathematicians Christoff Rudolff and Michael Stifel, it does have one well known claim to originality; the first use of two parallel lines as the sign for equality (because noe 2 thyngs, can be moare equalle). Recordes invention of the equals sign =, together with his adoption of the + sign (which betokeneth more) and the minus sign (which betokeneth less) placed him at the very forefront of European practice. Like most of Recordes books, The Whetstone is written in the form of a dialogue between a learned master and a clever, but rather precocious, scholar. After being patiently encouraged through the seconde parte of arithmetic (begun by the scholar in Recordes first book, The Grounde of Artes) followed by the extraction of rootes, the scholar remarks I am moche bounde unto you Trusting so to applie my studie, and emploie my knowlege, that it shall never repente you of your curtesie in this behalfe. To which the master, about to start an exposition on the difficult and strange cossike arte (algebra), replies Then marke well my words, and you shall perceive, that I will use as moche plainesse, as I maie, in teaching : And therefore will beginne with cossick numbers first. Here Recorde is again using terminology that is now archaic. In his day algebra was called the cossic art, derived from the Latin cosa, meaning thing. The Whetstone also includes a lengthy treatise on the arte of surde nombers, that is, on irrational numbers.
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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