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Description
An Introduction to the Geometry of N DimensionsFor many years, this was the only English language book devoted to the subject of higher dimensional geometry. While that is no longer the case, it remains a significant contribution to the literature, exploring topics of perennial interest to geometers. In the first four chapters, author D. M. Y. Sommerville explains the fundamental ideas of incidence, parallelism, perpendicularity, and angles between linear spaces. Chapter V presents analytical
For many years, this was the only English-language book devoted to the subject of higher-dimensional geometry. While that is no longer the case, it remains a significant contribution to the literature, exploring topics of perennial interest to geometers.In the first four chapters, author D. M. Y. Sommerville explains the fundamental ideas of incidence, parallelism, perpendicularity, and angles between linear spaces. Chapter V presents analytical geometry from the projective point of view, exploring some of the simplest ideas relating to algebraic varieties and offering a more detailed account of quadratics. Chapter VI examines analytic geometry of n dimensions from the metric point of view. The remaining four chapters deal with polytopes and address some of the elementary ideas in analysis situs. Chapter VIII treats the content of hyper-special figures, and the final chapter establishes the regular polytope.
For advanced undergraduate and graduate students in mathematics as well as historians of mathematics
Dover unabridged republication of the edition originally published by Methuen & Co., London, 1929.
Binding Type: Paperback
Publisher: Dover Publications
Published: 03/18/2020
ISBN: 9780486842486
Pages: 224
Weight: 0.50lbs
Size: 8.00h x 5.10w x 0.40d
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★★★★★ 5
Silk pillow cases that are a stitch above
Color: Beige, Size: 2 Pack Standard（20"X 26"）
These pillow cases are amazing. My family loves them. Great quality. They can be machine washed. I have purchased the more expensive brands but these are made from the same silk and have the same features like a hidden zipper for a fraction of the cost. They come in a variety of colors which is also an added bonus.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
So cozy!
Color: White, Size: King, Color: White, Size: King
I absolutely love this comforter! It's very cozy, soft, and fluffy! I bought it for a duvet that I have and it fits it perfectly. It has loops on all four sides to tie a duvet and comforter together, which is really helpful. This comforter is also breathable so it helps me sleep better at night because I'm not getting overheated. The color and appearance is true to the pictures it displayed. It also seems to be quite durable and good quality. I would definitely recommend for anyone needing a new cozy comforter!
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Must have!
Color: Light Grey, Size: Queen
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This comforter is absolutely amazing! It feels like something you'd find in a luxury hotel—soft, lightweight, airy, and incredibly comfortable. It has quickly become one of the best purchases I've made. The quality exceeded my expectations, and it's perfect for staying cozy without feeling too heavy.
My kids love it so much that they're constantly trying to steal it from me! If you're looking for a comfortable, high-quality comforter, I highly recommend this one. You won't be disappointed!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Cozy, warm and not heavy
Color: White, Size: Queen
This blanket is great and for a fair price, so fluffy and it’s on the warmer side but not heavy, which is exactly what I wanted!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Best cheap comforter I’ve ever purchased
Color: White, Size: King, Color: White, Size: King
The comforter made of super soft and comfortable! It’s definitely cat approved, my kitty immediately fell asleep on this amazing comforter. It was super cheap. It’s easy to clean and handles bleach great. Fits my duvet cover perfectly.
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Reviewed in the United States on May 6, 2026
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