The Ground of Arts

Robert Recorde's Arithmetic: or, The Ground of Arts was one of the first printed English textbooks on arithmetic and the most popular of its time. It introduced the equals sign ("="). It was preceded only by two anonymous texts in 1537 and 1539; The Ground of Arts appeared in London in 1543,^[1] and it was reprinted around 45 more editions until 1700.^[1] Editors and contributors of new sections included John Dee, John Mellis, Robert Hartwell, Thomas Willsford, and finally Edward Hatton.

References

^ ^a ^b Johnston, Stephen (2004). "Recorde, Robert (c.1512–1558)". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/23241. Retrieved 2012-01-26. (subscription or UK public library membership required)

Bregman, Alvan (1 July 2005). "Alligation Alternate and the Composition of Medicines: Arithmetic and Medicine in Early Modern England". Med. Hist. 49 (3): 299–320. doi:10.1017/s0025727300008899. PMC 1172291. PMID 16092789.
Karpinski, Louis (1925). The history of arithmetic. Rand McNally. LCC QA21.K3.
Recorde, Robert (1543). The Grounde of Artes. London: Reynold Wolff. LCC QA33.R3 1542a.
Recorde, Robert (1699) [1543]. Edward Hatton, ed. (ed.). Arithmetick, or, The ground of arts. London: J.H. for Charles Harper. {{cite book}}: |editor= has generic name (help)

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[ODNB-1] Johnston, Stephen (2004). "Recorde, Robert (c.1512–1558)". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/23241. Retrieved 2012-01-26. (subscription or UK public library membership required)

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