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Description
Gravitational Curvature: An Introduction to Einstein's TheoryThis classic text and reference monograph applies modern differential geometry to general relativity. A brief mathematical introduction to gravitational curvature, it emphasizes the subject's geometric essence, replacing the often tedious analytical computations with geometric arguments. Clearly presented and physically motivated derivations express the deflection of light, Schwarzchild's exterior and interior solutions, and the Oppenheimer Volkoff
This classic text and reference monograph applies modern differential geometry to general relativity. A brief mathematical introduction to gravitational curvature, it emphasizes the subject's geometric essence, replacing the often-tedious analytical computations with geometric arguments. Clearly presented and physically motivated derivations express the deflection of light, Schwarzchild's exterior and interior solutions, and the Oppenheimer-Volkoff equations.A perfect choice for advanced students of mathematics, this volume will also appeal to mathematicians interested in physics. It stresses the global aspects of cosmology and is suitable for independent study as well as for courses in differential geometry, relativity, and cosmology. Prerequisites include a background in Riemannian geometry and basic physics or a familiarity with relativity theory. Background chapters, with derivations, cover special relativity, continuum mechanics, and electromagnetism.
Binding Type: Paperback
Publisher: Dover Publications
Published: 07/19/2011
ISBN: 9780486481210
Pages: 172
Weight: 0.45lbs
Size: 8.40h x 5.30w x 0.50d
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4.6 ★★★★★
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★★★★★ 5
Rfid wallet
Material Type: Carbon Fiber Leather, Color: Black-3926
Just received the wallet. It does exactly what I expected it to do. Hold my cards securely and has a money clip, plus rfid blocker. Great price too.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
As advertised...Quality
Material Type: Leather, Color: Black-6313
As advertised...Should have purchased sooner....quality and reasonable price...guaranteed
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Reviewed in the United States on May 21, 2026
★★★★★ 5
For the Back Pocket Carrier out there....
Material Type: Leather, Color: Forest Brown-4337
I think this wallet is awesome! I've been carrying for about a week and it is working out great. I usually don't carry cash but for the last week, I've actually had a little cash on me. Instead of using the clip on the back (that clip is pretty tight and I don't like the look of having cash there), I just put is under the ID flap and the magnetic closure holds it in place. I love the color, the trigger works great, and the cards are held securely even when it isn't completely full. I also like the size. It requires me to carry less, which is something I need. (I realized two weeks ago that I had been carrying an old debit card in my old wallet around that had expired in 2023 and it turned out that I didn't have an account at that bank! hahahahahaha. I must be getting old.).
This is important to me: I carry a wallet in my back pocket. I always have and that is what is comfortable to me. Front pocket carry feels weird to me. I've been carrying this wallet in my back pocket and sitting on it with no issues. I'm a big guy (300 lbs) and, so far, it's held up great. In all honesty, I do take it out of my pocket and put it in my console when I drive, but that's it. Everywhere else I go, and sit, it stays in my back pocket. I know it's only been a week, but I'm glad to see that I haven't crushed it, or deformed it, or anything.
Ultimately, it's been great and I'm glad I got this one.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
"Stylish and Functional Guess Wallet!"
This is a fantastic wallet that combines style and practicality! The sleek black design features the iconic Quattro G monogram print on the leather (or faux-leather). It has a contrasting stripe with the "GUESS" logo on the front, giving it a modern and sophisticated edge.
Despite its slim, compact silhouette, it offers great organization. It typically includes multiple card slots, slip pockets, a clear ID window, and a full-size bill compartment, providing ample space for all your essentials while keeping a flat profile in your pocket.
Many customers appreciate the durable material and the high-end look without the high-end price. It often comes in a gift box, making it an ideal present for any occasion. Overall, it's a stylish and functional accessory that reflects the brand's fashionable legacy.
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Reviewed in the United States on November 28, 2025
★★★★★ 5
A great wallet!
Size: One Size, Color: Brown Quattro G
This was exactly what I was looking for. A stylish wallet at a amazing price point. RFID blocking works as intended.
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Reviewed in the United States on April 30, 2026