Download e-book for kindle: 100 Essential Things You Didn't Know You Didn't Know: Math by John D. Barrow

By John D. Barrow

ISBN-10: 0393338673

ISBN-13: 9780393338676

“Where else does math turn into a romp, packed with pleasing tips and turns?”—Bryce Christensen, Booklist

Have you ever thought of why you usually get caught within the longest line? Why two’s corporation yet three’s a crowd? Or why there are six levels of separation rather than seven? during this highly informative and forever interesting booklet, John D. Barrow takes the main baffling of daily phenomena and—with simple arithmetic, lucid reasons, and illustrations—explains why they paintings the way in which they do. His witty, crystal-clear solutions make clear the darkish and shadowy corners of the actual international all of us imagine we comprehend so good. forty b/w illustrations

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It has 20 triangular faces, 30 edges, and 12 vertices. Greek Mathematics and Geometry The mathematical thinking of the ancient Greeks marked a turning point in the development of the subject. Building on the empirical discoveries of the Babylonians and Egyptians, Greek mathematicians instigated a more scientific approach that is still the basis of mathematics today. T he big innovation that distinguished ancient Greek from previous mathematics was the development of deductive logic, and with it the concept of proof.

Previously in calculations a gap was left as a spaceholder in the appropriate column, but this led to ambiguity: out of context, it was practically impossible to distinguish between numbers such as 10, 20, 30, and 400 and simple 1, 2, 3, and 4. The gap representing zero was at first replaced with a small dot by Indian mathematicians, but this then evolved into the “0” symbol of Hindu–Arabic numerals. ” 8 9 10 Ancient Greek and Roman numerals and a decimal system in positional notation. This system had its roots in the numerals of the Indus With the rise of Greek civilization Valley civilization contemporary and its interest in mathematics with the Babylonians, which came the practice of using evolved into a recognizable letters of the alphabet as ancestor of our modern numerals.

525 BCE Reputedly taken prisoner by Cambyses II, the King of Persia, and taken to Babylon, where he studies arithmetic, music, and other disciplines with the scholars. 520 BCE Returns to Samos, where, after a visit to Crete to study its legal system, he forms a school. He is not treated well by the Samians, however, and travels on to mainland Greece, and from there to southern Italy. 518 BCE Settles in Croton, a Greek seaport in southern Italy, where he founds a school or brotherhood devoted to the study of mathematics, but also including a medical school.

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100 Essential Things You Didn't Know You Didn't Know: Math Explains Your World by John D. Barrow

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