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Description
Oscillations in Nonlinear SystemsBy focusing on ordinary differential equations that contain a small parameter, this concise graduate level introduction to the theory of nonlinear oscillations provides a unified approach to obtaining periodic solutions to nonautonomous and autonomous differential equations. It also indicates key relationships with other related procedures and probes the consequences of the methods of averaging and integral manifolds. Part I of the text features
By focusing on ordinary differential equations that contain a small parameter, this concise graduate-level introduction to the theory of nonlinear oscillations provides a unified approach to obtaining periodic solutions to nonautonomous and autonomous differential equations. It also indicates key relationships with other related procedures and probes the consequences of the methods of averaging and integral manifolds.Part I of the text features introductory material, including discussions of matrices, linear systems of differential equations, and stability of solutions of nonlinear systems. Part II offers extensive treatment of periodic solutions, including the general theory for periodic solutions based on the work of Cesari-Halel-Gambill, with specific examples and applications of the theory. Part III covers various aspects of almost periodic solutions, including methods of averaging and the existence of integral manifolds. An indispensable resource for engineers and mathematicians with knowledge of elementary differential equations and matrices, this text is illuminated by numerous clear examples.
Binding Type: Paperback
Publisher: Dover Publications
Published: 05/20/2015
ISBN: 9780486673622
Pages: 192
Weight: 0.47lbs
Size: 8.42h x 5.37w x 0.40d
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4.8 ★★★★★
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★★★★★ 5
Would recommend
Scent: Unscented, Size: 70 Count (Pack of 1)
Will continue buying these since other trash bags I’ve noticed a lot of leaking. Great for cleaning out cat litter can hold up a good amount of weight.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Fantastic towels at a great price on subscribe and save
Package Size Name: Family, Size: 286 Count (Pack of 6)
As an oil painter, Viva are the gold standard for wiping brushes and whatever else you need a towel for while painting. I bought them for that purpose. I didn’t count on loving these paper towels for every other paper towel duty in my home.
These paper towels are incredibly hardy, and perform much like a thin cloth towel. They last and last. I can rinse and reuse a towel to clean all the kitchen counters plus clean the stainless steel gas cooktop. All with one section of paper towels. I couldn’t do anything close with any other brand I’ve used.
I love the select a size feature. For quick cleanups, one section is more than adequate. I’ve used one section in my swifter handle when I’m out if swifter cloths (which is always- I never buy those things), and used both sides of the towel to dust mop my wood floors. I use these to dust my home with a little spray wax, cleaned the tires on my car with no towel shredding, and scrubbed the filthy barbecue with bleach cleanser, rinsed it out, and scrubbed some more. These towels are tough yet soft, sturdy and disposable. They are soft enough to use as a napkin, and absorb like crazy.
I buy mine by the case from Amazon subscribe and save every three or four months, and love saving 20% doing so.
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Reviewed in the United States on August 7, 2019
★★★★★ 5
Viva is the best and, by usage, the most economical paper towel
Package Size Name: Family, Size: 286 Count (Pack of 6)
Still basically the same Viva. I compared this version with the prior one I still had on hand. This one has a slightly woven vs felted appearance and the side against the roll is slightly rougher or textured, while the outside face is slightly smoother. The inside face looks as if it might leave lint, maybe. Half sheet size is the same and both versions absorbed one ounce of water. Both seemed equally thick, judging by the amount of see-through-ness, both dry and wet. Both seemed equally tough wet. This version clings to the roll less firmly, too.
Viva is the very best AND the least expensive paper towel available based on how long it lasts. It takes weeks to go through a roll, especially if you realize a sheet can be reused to wipe up more than one small mess while you cook and you need many fewer to clean up the big messes. Use one to dry a pot and leave it by the cutting board to wipe up. If you're used to ordinary paper towels, there may be a period of adjustment, but try to take just one sheet instead of the 4 you may think you need; you can always get another. They can scrub an iron skillet or pat dry your food. They make the best handkerchief substitutes, too. One subscribe and save box lasts me about a year.
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Reviewed in the United States on December 11, 2019
★★★★★ 5
Viva for the win!
Package Size Name: Family, Size: 286 Count (Pack of 6)
Best paper towels, sad they don't sell them in most stores anymore but...thankful I can still get on amazon...they are stronger than other paper towels, softer but not weak and great for body use IF you needed to..can you tell I ran out of tissues? Seriously the best! Bounty who?
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Reviewed in the United States on January 5, 2026
★★★★★ 5
Deliveries are on time, product is always in great shape
Package Size Name: Family, Size: 286 Count (Pack of 6)
Great product and delivery is always on time👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
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