SKU: 46153339809

Mathematics in the Time of the Pharaohs

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Mathematics in the Time of the PharaohsIn the past, scholars have tended to dismiss the mathematics of the ancient Egyptians as child's play, compared with the achievements of the Greeks and other later civilizations. Nevertheless, in a society that achieved the marvelous accuracy of construction revealed in the Pyramids, extensive systems of irrigation canals, the erection of large granaries, levying and collecting of taxes, and other evidences of a well organized and highly developed

In the past, scholars have tended to dismiss the mathematics of the ancient Egyptians as child's play, compared with the achievements of the Greeks and other later civilizations. Nevertheless, in a society that achieved the marvelous accuracy of construction revealed in the Pyramids, extensive systems of irrigation canals, the erection of large granaries, levying and collecting of taxes, and other evidences of a well-organized and highly developed culture, mathematics must have played a major role.
In this remarkably erudite work, the first book-length study of ancient Egyptian mathematics, Professor Gillings examines the development of Egyptian mathematics from its origins in commercial and practical computations to such accomplishments as the solution of problems in direct and inverse proportion; the solution of linear equations of the first degree; determining the sum of arithmetical and geometrical progressions, and the use of rudimentary trigonometric functions in describing the slopes of pyramids. Drawing on all the extant sources -- Egyptian Mathematical Leather Roll, the Reisner Papyri, the Moscow Mathematical Papyrus, and, most extensively, the Rhind Mathematical Papyrus, a training manual for scribes- the author shows that although the mathematical operations of the ancient Egyptians were limited in number, they were adaptable to a great many applications. Professor Gillings is also at pains to debunk such myths as the numerical mysticism that arose in connection with the construction of the great Pyramids, and the oft-repeated assertion that the Egyptians were conversant with the Pythagorean Theorem.
Enhanced with photographs of age-old papyri and other artifacts, as well as the author's own calligraphic renderings of hieroglyphic and hieratic words and numerals, this carefully researched and well-presented study will fascinate Egyptologists, mathematicians, engineers, archaeologists, and any student or admirer of the remarkable civilization that flourished on the shores of the Nile so many centuries ago.



Binding Type: Paperback
Publisher: Dover Publications
Published: 06/01/1982
ISBN: 9780486243153
Pages: 320
Weight: 0.72lbs
Size: 8.41h x 5.39w x 0.59d
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SKU: 46153339809

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StuartS
Omaha, US
β˜…β˜…β˜…β˜…β˜… 5
My dog and I love this!
Color: Orange, Size: Large
The balls are larger and fit the Chuck It with the larger ball size perfectly. The balls are hard rubber material and have stood up to continued chewing after our dog picks them up. They bounce and are really hard wearing. Great product for the price!
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Reviewed in the United States on April 18, 2025
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Cedarlamb
Carnegie, US
β˜…β˜…β˜…β˜…β˜… 4
Durable but don't give this to them as an everyday chew toy.
Color: Orange, Size: Large
My Catahoula loves these things. Great for a training aid and to let them get their zoomies out but not durable enough for an idle chew toy.
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Reviewed in the United States on February 10, 2023
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RD
Birmingham, US
β˜…β˜…β˜…β˜…β˜… 5
Great for dogs that love cat toys
Size: Small - 2 Count (Pack of 1)
I have a 45# dog who loves to play with cat toys. She's a strange one, but it's what she likes. She also loves ChuckIt balls (glow in the dark, squeaker, rubber, etc.). We bought 2 2-packs and we're glad we did. These are about the side of ping pong balls or golf balls. Yes, if your dog's an aggressive chewer or smaller than a teacup these will probably not last long. Yes, my weirdo dog almost immediately picked all the "fuzz" off the ball because that's what she does. The quality and durability of the ball haven't been affected, it's just a bald little ball. Highly recommend for any non-aggressive chewers that LOVE cat-sized toys.
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Reviewed in the United States on November 18, 2020
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Jennifer Williams
Natrona Heights, US
β˜…β˜…β˜…β˜…β˜… 5
Not very durable
Size: Small - 2 Count (Pack of 1)
I purchased some of these balls a while back and had forgotten how quickly my yorkie puppy was able to destroy them.. I recently ordered some more bc I saw them on sale. I now have another yorkie pup that also loves to play ball. They actually play ball with each other. Within 24 hrs, the balls are fraying and they are getting choked on the fuzzy s off the balls. I'm not going to bother to return 3 2pks bc they were so cheap. Now I know why.
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Reviewed in the United States on November 9, 2023
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RYS
Omaha, US
β˜…β˜…β˜…β˜…β˜… 1
This ball seems to be a counterfeit.
Size: Large - 2 Count ( Pack of 1), Size: Large - 2 Count ( Pack of 1)
This ball seems to be a counterfeit and if it is not, it was made not to be played with by animal or human. In a review I just read, Iduna had posted this: Iduna 1.0 out of 5 stars Only for the most docile of play Reviewed in the United States on March 6, 2024 Size: Large - Pack of 2Verified Purchase I thought it was great that these came in all sizes and bought the large for an urban dog park hoping it would not go through the slats of the fence and bought these as sort of a test before I bought the launcher. While the sizing was great unfortunately each one lasted a little more than half an hour. The rubber sphere part is constructed of two halves and I don't know if there's any sort of sealant between those two halves or if it's just held together by the thin tennis ball type cover but some bouncing off of the turf covered concrete and dog play upon retrieval caused the two rubber halves to separate and a few more tosses led it to quit bouncing and sort of squished together when the dogs grabbed it. That caused the thin tennis ball type material to fray and all was lost. This post was more than true without any exaggeration. Our dog fetched it in the house and tore it up within 5 mins. The original Chuckit launcher and ball was our first purchase thinking that these would be great balls to replace the Launcher ball which actually lasted our dog about 3 months of constant play and grinding on it (He loved that thing). This one came apart very easily as you can see, but the smell of the broken rubber was extremely solvent smelling (like toluene) of which I have good experience with chemicals like it from the industry in which I worked. Industrial solvents are definitely bad for our pets and that is the smell that comes out of this broken ball even at a distance. It filled our kitchen with the stench. I find this rather suspect when the description says: "this toy is designed with an extra-thick natural rubber core". In any case, the ball fell apart quickly and it is not like the launcher ball at all. I coach tennis and a real tennis ball would be better for our dog than this thing. Broken tennis balls don't smell like that at all and they last much longer and cost the same amount for 3 or 4 vs 2.
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Reviewed in the United States on March 17, 2024

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