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Among his [John Wallis'] interesting discoveries was the relation
\frac{4}{\pi} = \frac32\cdot\frac34\cdot\frac54\cdot\frac56\cdot\frac76\cdot\frac78\cdots
one of the early values of π involving infinite products.

— David Eugene Smith History of Mathematics (1923)

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He used capital vowels for the unknown quantities and capital consonants for the known, thus being able to express several unknowns and several knowns.

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With the coming of the Jesuits in the 16th century, and the consequent introduction of Western science, China lost interest in her native algebra...

History of Mathematics (1925)

He... gave thirteen forms of the cubic which have positive roots, these having already been given by Omar Kayyam.

History of Mathematics (1925)

He states that the root of x^3 + 6x = 20 isx = \sqrt[3]{\sqrt{108} + 10} - \sqrt[3]{\sqrt{108} - 10}.

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The excellent work of Tropfke is an example of the tendency to break away from the mere chronological recital of facts.

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Quote text and notes from Wikiquote: David Eugene Smith (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.