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On This Day ...

Important events from the history of math that happened on this day:

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December 29th

1256 Possible birthdate of Ibn Al-Banna who studied the connection between triangular numbers, combinations, and binomial coefficients. He lived most if not all of his life in Marrakesh, Morocco.

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Ibn al-Banna
1692 Huygens, in a letter to L'Hospital, gave the first complete sketch of the folium of Descartes. Although the curve was first discussed August 23, 1638, no complete sketch had previously been given due to a reluctance to use negative numbers as coordinates.

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Christiaan Huygens
Guillaume de l'Hospital
The Folium of Descartes
1731 Brook Taylor died in London, England. He was one of many mathematicians of his time to discover (independently) what became known as Taylor series and Taylor's Theorem.

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Brook Taylor
1856 Stieltjes born in the Netherlands. He is best known for the Stieltjes integral and for his work on continued fractions.

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Thomas Stieltjes

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