Swiss Economicblogs.org
In Historia Mathematica, Daniel Mansfield and N.J. Wildberger argue that Plimpton 322, the Old Babylonian tablets, served as an exact ratio-based trigonometric table. … Instead, P322 is a trigonometric table of a completely unfamiliar kind and was ahead of its time by thousands of years. … we must adopt two ideas that are unique to the mathematical culture of the Old Babylonian (OB) period, between the 19th and 16th centuries B.C.E. First we abandon the notion of angle, and instead...
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