Yahoo Answers: Answers and Comments for Who was the first person who used the decimal point.? [History]
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enUS
Sat, 18 Jan 2020 13:22:06 +0000
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Yahoo Answers: Answers and Comments for Who was the first person who used the decimal point.? [History]
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From Anonymous: Decimal fractions. Abu'l Hasan Ahmad ibn I...
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Sat, 18 Jan 2020 14:18:46 +0000
Decimal fractions. Abu'l Hasan Ahmad ibn Ibrahim AlUqlidisi (c. 920c. 980) wrote the earliest known text offering a direct treatment of decimal fractions. "AlUqlidisi uses decimal fractions as such, appreciates the importance of a decimal sign, and suggests a good one," according to A. S. Saidan, "The earliest extant Arabic arithmetic," Isis 57 (1966), 475490.
http://www.math.hawaii.edu/~tom/history/fractions.html

From Hernando: Historians believe it to be one Akbar alRaqiz...
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Sat, 18 Jan 2020 13:24:50 +0000
Historians believe it to be one Akbar alRaqiz, in ancient Arabia.

From Phil: Tables of logarithms prepared by John Napier i...
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Sun, 19 Jan 2020 00:01:19 +0000
Tables of logarithms prepared by John Napier in 1614 used the period (full stop) as the decimal separator, which was then adopted by Henry Briggs in his influential 17th century work.
But earlier decimal separators using dashes, commas and slashes, etc were used were used as far back as the 10th century, usually by Arabian mathematicians.
see link below.
https://en.wikipedia.org/wiki/Decimal_separator#History

From Elaine M: Who invented the decimal?
Decimal fractions ha...
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Sat, 18 Jan 2020 18:14:10 +0000
Who invented the decimal?
Decimal fractions had already been introduced by the Flemish mathematician Simon Stevin in 1586, but his notation was unwieldy. The use of a point as the separator occurs frequently in the Constructio. Joost Bürgi, the Swiss mathematician, between 1603 and 1611 independently invented a system…
https://www.britannica.com/www.britannica.com › science › decimalfraction
Decimal fraction  mathematics  Britannica.com

John Napier, sometimes spelt Neper, was a mathematician and theologian who correctly forecast that the 'decimal point' would revolutionise mathematics, and who wrongly predicted the end of the world.
https://www.wardsbookofdays.com/www.wardsbookofdays.com › ...
John Napier: invented the decimal point  Ward's Book of Days

From Notatroll: Dr. Decimal in 876 AD.
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Sat, 18 Jan 2020 13:26:13 +0000
Dr. Decimal in 876 AD.

From griggle: Some chick named Dot about 1904
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Sat, 18 Jan 2020 13:46:52 +0000
Some chick named Dot about 1904

From TB12: Some guy named Dewey.
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Sat, 18 Jan 2020 14:26:12 +0000
Some guy named Dewey.

From Jake No Chat: Dewey, as part of the Dewy Decimal System. Ju...
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Sat, 18 Jan 2020 14:27:00 +0000
Dewey, as part of the Dewy Decimal System. Just look in the card catalogues and you will be convinced.