Numerology and numerological divination by systems such as isopsephy were popular among early mathematicians, such as Pythagoras, but are no longer considered part of mathematics and are regarded as pseudomathematics or pseudoscience by modern scientists.
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John Newsome Crossley, DPhil, MA (Oxon), (born 1937, Yorkshire, England) is a British-Australian mathematician and logician who writes in the field of logic in computer science, history of mathematics and medieval history.
His fields of expertise are history of science, history of mathematics, the scientific revolution, sociology of science, intellectual history, 17-18th centuries, history of Chinese science, and the history of botany.
#A History of Mathematics in America before 1900, by D. E. Smith and Jekuthiel Ginsburg (out of print)
(A standard history of mathematics, according to Franklin (E. T. Bell's The Development of Mathematics, 1940), says that "Leonardo's published jottings on mathematics are trivial, even puerile, and show no mathematical talent whatever.") The invention of printing he compares to television, which produced "a flood of drivel catering to the lowest common denominator of the paying public, plus a quantity of propaganda paid for by the sponsors".
As successor to Otto Neugebauer (1899–1990) in Brown’s History of Mathematics Department (which Neugebauer established in 1947), Pingree numbered among his colleagues men of extraordinary learning, especially Abraham Sachs and Gerald Toomer.
Florian Cajori, The Dandelin–Gräffe method, in A history of Mathematics (New York, 1938), 364.
with David E. Rowe: The Emergence of the American Mathematical Research Community 1876–1900: J. J. Sylvester, Felix Klein, and E. H. Moore, AMS/LMS History of Mathematics 8, Providence/London 1994
with Jeremy J. Gray (eds.): Episodes in the History of Modern Algebra (1800–1950), AMS/LMS History of Mathematics 32, Providence/London 2007 (Conference at MSRI 2003)
From 1967 to 1973 she was a scientific assistant at the Research Institute of the Deutsches Museum in Munich and the Institute for the History of Mathematics and Natural Sciences at the Ludwig-Maximilians-University Munich, where in 1973 she and Helmuth Gericke graduated.