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Algebra Geometry Probability in the 17th Century 1

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  John Napier 1550 –  1617  Scottish ã  Born in Merchiston Castle, Edinburgh ã  Fatherof Logarithm ã  Invented the first system of logarithms, described in his book  “ MirificiLogarithmorumCanonisDescriptio ” (1614).  John Napier ã  Improved the decimal notation and was the first who used andpopularized the decimal point to separate the whole number part from the fractional part of  a number  John Napier ã  Invented the “Napier’s ones” ~A form of rod by which two numbers can be multiplied in a mechanical way.
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