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Description
Fourier SeriesRichard A. Silverman's series of translations of outstanding Russian textbooks and monographs is well known to people in the fields of mathematics, physics, and engineering. The present book is another excellent text from this series, a valuable addition to the English language literature on Fourier series. This edition is organized into nine well defined chapters: Trigonometric Fourier Series, Orthogonal Systems, Convergence of Trigonometric Fourier
Richard A. Silverman's series of translations of outstanding Russian textbooks and monographs is well-known to people in the fields of mathematics, physics, and engineering. The present book is another excellent text from this series, a valuable addition to the English-language literature on Fourier series.This edition is organized into nine well-defined chapters: Trigonometric Fourier Series, Orthogonal Systems, Convergence of Trigonometric Fourier Series, Trigonometric Series with Decreasing Coefficients, Operations on Fourier Series, Summation of Trigonometric Fourier Series, Double Fourier Series and the Fourier Integral, Bessel Functions and Fourier-Bessel Series, and the Eigenfunction Method and its Applications to Mathematical Physics. Every chapter moves clearly from topic to topic and theorem to theorem, with many theorem proofs given. A total of 107 problems will be found at the ends of the chapters, including many specially added to this English-language edition, and answers are given at the end of the text. Richard Silverman's excellent translation makes this book readily accessible to mathematicians and math students, as well as workers and students in the fields of physics and engineering. He has also added a bibliography, containing suggestions for collateral and supplementary reading. 1962 edition.
Binding Type: Paperback
Publisher: Dover Publications
Published: 06/01/1976
ISBN: 9780486633176
Pages: 352
Weight: 0.80lbs
Size: 8.26h x 5.65w x 0.69d
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★★★★★ 5
Great for heavy chewers! Belgian Malinois Approved!
Color: E) 8-Pack 2.5" Balls (Yellow)
I bought these 6 months ago because my dog kept loosing his Kong balls. These were such a better price ball (but still had good reviews) that I thought I would give them a try. They are wonderful. After six months of chewing and chasing and playing with a Belgian Malinois, the two that I’ve gotten out are still in great condition. The bright color makes them easier to find, so none have been permanently lost yet.
They are bouncier and a little bit lighter weight compared to the Kong balls of the same size, which I honestly appreciate because my maligator likes to shoot them at my feet.
So far the material seems high quality and I feel safe letting the dog chew on it for hours on end.
The 8 pack was cheaper than 2 Kong balls. A great deal for a great product!!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Durable, high-bounce dog balls that hold up well to energetic play
Color: D) 4-Pack 3" Balls (Yellow)
The Chew King 3-inch rubber balls have been great for active play sessions. The rubber feels thick and durable, and the bounce is surprisingly lively compared to many standard dog balls. They’re the perfect size for medium to large dogs and are easy for dogs to carry, chase, and retrieve. After repeated games of fetch, the surface has held up well without cracking or losing its shape.
One thing that stands out is how easy they are to clean. Dirt and slobber rinse off quickly, so they’re ready for the next round of play. The bright color also makes them easier to find in grass or bushes compared to darker toys.
For longer life, it helps to supervise play if your dog is a very aggressive chewer, since these are designed more for fetch than constant chewing. Also, rotating toys every few days can keep dogs more engaged and extend the lifespan of each ball. Overall, this is a solid set of durable fetch balls that provide great bounce and reliable outdoor playtime fun.
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Reviewed in the United States on March 5, 2026
★★★★★ 5
toughest dog balls in the world
Color: E) 8-Pack 2.5" Balls (Yellow), Color: E) 8-Pack 2.5" Balls (Yellow)
best balls in the universe. I have a 70# pit bull and a 120# presa canaria. All the other balls I bought lasted maybe 3 weeks, I have had these for over a year and play with them and the dogs 5-6 days a week. They still look brand new, They seem like they will last a year or so and they are both serious chewers. A presa has a bite force od about 525psi, twice a pitty
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Reviewed in the United States on April 24, 2026
★★★★★ 5
They worked out great!!!
Color: D) 4-Pack 3" Balls (Yellow), Color: D) 4-Pack 3" Balls (Yellow)
So far have been the solution we were looking for! I was extremely tired of the non stop destruction and order of large Chuckit balls for our high energy/high drive dog. For about the same price I bought four 3 inch balls to test out their durability and fit for the thrower. THEY WORK! Perfection! They even make a fun whistling sound as they sail through the air. They do require a tad more muscle in the thrower but that is not a problem. They have already shown to be WAY more durable. The 3 inch balls work in the large chunkit thrower. Super find.
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Reviewed in the United States on April 9, 2026
★★★★★ 4
Durable
Color: E) 8-Pack 2.5" Balls (Yellow)
My dogs love them. They are very bouncy, and ideal size, and durable. Great alternative to a tennis ball which in my house only last 30 minutes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
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