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In 1892/1893 the Russian archeologist Vladimir Golenishchev traveled to Thebes where he purchased a papyrus that would later be known as the “second most important document” to our understanding of ancient Egyptian mathematics or the Moscow Papyrus for short [1]. It contains 25 ancient Egyptian practice problems with their solutions and provides an invaluable demonstration of how ancient Egyptian mathematicians approached and solved problems, including problems of calculating payments, finding ratios for beer making, geometry, and (very) basic algebra. The most remarkable of all of these is problem number 14 concerning the volume of a truncated pyramid. From the papyrus it is clear that the ancient Egyptians knew the same formula we do for this volume, but one thing is unclear… how?
In modern mathematics we would find the volume of such a pyramid quite easily using algebra, but from every other source we have found it very much appears that the ancient Egyptians had no substantial knowledge of algebra. This seeming contradiction was first noticed by B.A Turaev in his 1917 paper [2] and expanded on in a 1929 paper by Gunn and Peet who provided a potential way the ancient Egyptians could have discovered this formula [4]. However, while Gunn and Peet found an elegant way to find this formula without the use of algebra (in the modern sense), their solution would require the ancient Egyptians to have known a version of what is called “Greek algebra” which is also not demonstrated in any source as pointed out by Vetter in his 1933 roast on the same topic [4]. There have been many more voices in this discussion over the years, including Kurt Vogel in 1930 and and Siegmund-Schultze in 2022 (who suggested the Egyptians used the same method as the Chinese mathematician Liu Hui), however none have provided a potential solution convincing enough to gain a consensus in the academic community [5, 6]. So the question still remains… how did they do it??
In this video we will explore this very question and even take a look at my own potential solution which I believe to be the most practical and least objectionable I have seen yet! But the question I have is, what do you think? Do you think my solution was doable by the ancient Egyptians? Do you think that is how they actually did it? Or do you have your own ideas?
You may learn, you may laugh, and if I’ve done my job you may even not cry. But no matter how you react, if our video makes your day better please remember to like and subscribe and tell your friends. Have a great day!
Sources
1. M. Clagett, Ancient Egyptian Science. 1989.
2. B. A. Turaev, “The Volume of the Truncated Pyramid in Egyptian Mathematics,”in Ancient Egypt (1917), 100-102.
3. Gunn, B., & Peet, T. E. (1929). Four Geometrical Problems from the Moscow Mathematical Papyrus. The Journal of Egyptian Archaeology, 15(3/4), 167-185.
4. Vetter, Q. (1933). Problem 14 of the Moscow Mathematical Papyrus. The Journal of Egyptian Archaeology, 19(1/2), 16-18.
5. Vogel, K. (1930). The Truncated Pyramid in Egyptian Mathematics. The Journal of Egyptian Archaeology, 16(3/4), 242-249. doi.org/10.2307/3854215
6. Siegmund-Schultze, Reinhard (2022). Another look at the two Egyptian pyramid volume ‘formulas’ of 1850 BCE, British Journal for the History of Mathematics. British Journal for the History of Mathematics. ISSN: 2637-5451. 37s 171 - 178. doi:10.1080/26375451.2022.2106061.
Intro Music
"Cambodian Odyssey" Kevin MacLeod (incompetech.com)
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