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Isaac Newton’s College Notebook « Another Word For It -
"This small notebook was probably used by Newton from about 1664 to 1665. It contains notes from his reading on mathematics and geometry, showing particularly the influence of John Wallis and René Descartes. It also provides evidence of the development of Newton’s own mathematical thinking, including his study of infinite series and development of binomial theorem, the evolution of the differential calculus, and its application to the problem of quadratures and integration." ‎- Cat-coloured object