Siyuan yujian

Directory

References

Images

Blaise Pascal first described his triangle for generating the coefficients of a binomial expansion in 1665. The Chinese version, however, is centuries older. It was included as an illustration in Zhu Shijie's Siyuan yujian (1303; “Precious Mirror of Four Elements”), where it was already called the “Old Method.”

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Flag of Bhutan

6 Small Kingdoms of the World

Red Army (Soviet) soldiers in the Russian Revolution.

Russian Revolution Timeline

Close-up of ostriches (Struthio camelus) necks and heads; location unknown.

6 of the World's Most Dangerous Birds

Martin Luther King, Jr.

Why We Celebrate MLK Day

Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

Was Martin Luther King, Jr., a Republican or a Democrat?

Odissi Indian classical female dancer on white background. (Indian dancer; classical dancer; Indian dance)

6 Classical Dances of India

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Siyuan yujian: Media

work by Zhu Shijie

Images

Blaise Pascal first described his triangle for generating the coefficients of a binomial expansion in 1665. The Chinese version, however, is centuries older. It was included as an illustration in Zhu Shijie's Siyuan yujian (1303; “Precious Mirror of Four Elements”), where it was already called the “Old Method.”

Blaise Pascal first described his triangle for generating the coefficients of a binomial...

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