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Thank you. Stevin's method for calculating decimal fractions is also explained on pages 154-158 in _A History of Mathematical Notations, Volume I_, by Florian Cajori, 1928, which is free on Google Books. It's astounding how many geniuses it took to get us to this "basic" level of understanding. How much we take for granted these days!

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author

Hi Rusty, thank you for the pointer to Cajori's book. Yes, what we consider today to be trivial was at one time incredibly difficult.

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Jul 12Liked by John Plaice

Thanks! I was surprised to read Stevin's connection with my home city. Stevin was born in the Flemish city of Bruges and worked for the University of Leiden. He just visited Delft for the tower experiments.

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