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Description
Prime Obsession: Berhhard Riemann and the Greatest Unsolved Problem in MathematicsThe definitive story of the Riemann Hypothesis, a fascinating and epic mathematical mystery that continues to challege the world. In 1859, Bernhard Riemann, a little known thirty two year old mathematician, made a hypothesis while presenting a paper to the Berlin Academy titled "On the Number of Prime Numbers Less Than a Given Quantity." Today, after 150 years of careful research and exhaustive study, the Riemann Hyphothesis remains unsolved, with a
The definitive story of the Riemann Hypothesis, a fascinating and epic mathematical mystery that continues to challege the world. In 1859, Bernhard Riemann, a little-known thirty-two year old mathematician, made a hypothesis while presenting a paper to the Berlin Academy titled "On the Number of Prime Numbers Less Than a Given Quantity." Today, after 150 years of careful research and exhaustive study, the Riemann Hyphothesis remains unsolved, with a one-million-dollar prize earmarked for the first person to conquer it.Alternating passages of extraordinarily lucid mathematical exposition with chapters of elegantly composed biography and history, Prime Obsession is a fascinating and fluent account of an epic mathematical mystery that continues to challenge and excite the world.
Binding Type: Paperback
Publisher: Plume Books
Published: 05/25/2004
ISBN: 9780452285255
Pages: 448
Weight: 0.82lbs
Size: 7.98h x 5.38w x 0.95d
Review Citations: Science 06/05/2009 pg. 1268
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Product Reviews
★★★★★ 5
Easy to use and work great
Color: White, Color: White
I absolutely love this trimmer! It is easy to use, lightweight, and comes with different attachments for different needs. It provides a smooth trim without irritation and is perfect for quick touch-ups. The battery lasts a long time, and the quality is excellent for the price. Highly recommend!
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Reviewed in the United States on June 2, 2026
★★★★★ 5
100% yes ! Loved this product
Color: White
Great little trimmer! Easy to use, gentle on sensitive skin, and comes with multiple attachments for different areas. It gives a close trim without irritation, charges quickly, and is perfect for travel. Excellent value for the price—highly recommend!
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Reviewed in the United States on June 3, 2026
★★★★★ 1
Buy a different one
Color: White
It looks nice but the trimming is garbage. The smaller trimmer l like for eyebrows or close shaving facial hair is worthless. You cannot get close enough nor can you see what you’re doing. You also cannot get right on the edge for precise edges for eyebrows for instance because of how it’s made.
The seller does not allow for simple drop off returns either. Too much of a hassle to print labels and too costly for ups pick up. A waste of $20.
Buy something else.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Great Product
Color: White
I’m honestly really happy with this purchase! This 3-in-1 bikini trimmer came exactly as expected and works super well. It’s easy to use, lightweight, and doesn’t feel cheap at all. I like that it comes with different attachments so you can switch it up depending on what you need—that’s a big plus.
It trims smoothly without pulling or irritating my skin, which was something I was worried about, but it handled everything gently. The design is cute and simple, and it’s easy to clean after using it too. For the price, it’s definitely worth it—you get good quality without spending a lot.
Shipping was on time and everything came in good condition. Overall, I’d definitely recommend this if you’re looking for something affordable that still gets the job done right!
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Very good toothbrush that your cat can chew to help clean his teeth
These are silicone pet toothbrushes. What they work really well for, is letting your cat chew to clean their own teeth (once you put some tasty fish toothpaste on it). It's so difficult to find things the cats will actually chew on in this way and the fact that its silicone (soft but not easily broken) is perfect. I recommend just holding the other end and encouraging the cat to chew on the silicone part, while adding toothpaste as needed. I've only convinced one of my cats to do this, but he loves it! I use a different smaller and softer brush to actually brush with and combined, this seems to be making a big difference for the plaque and his breathe. Very happy I found these and will repurchase as needed.
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Reviewed in the United States on March 27, 2026