Book:Robert Recorde/The Whetstone of Witte, whiche is the seconde parte of Arithmeteke: containing the extraction of rootes; the cossike practise, with the rule of equation; and the workes of Surde Nombers
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Robert Recorde: The Whetstone of Witte, whiche is the seconde parte of Arithmeteke: containing the extraction of rootes; the cossike practise, with the rule of equation; and the workes of Surde Nombers
Published $\text {1557}$.
Subject Matter
in which can be found:
- a description of the cossist practice
- the first appearance in print of the equals sign
- the word zenzizenzizenzic.
Contents
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Sources
- 2008: Ian Stewart: Taming the Infinite ... (previous) ... (next): Chapter $4$: Lure of the Unknown: Algebraic symbolism