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Description
Nonstandard AnalysisThis wonderful little book by Alain Robert should bring about a complete change in the learning of NSA. The author has accomplished a rare feat in the educational literature. He has succeeded in writing a book which is simple and brilliant, deep and witty, short and far ranging. This is mathematics teaching at its best." J. M. L vy Leblond, European Journal of Physics Brief and readable, this introduction to nonstandard analysis is based on the
This wonderful little book by Alain Robert should bring about a complete change in the learning of NSA. The author has accomplished a rare feat in the educational literature. He has succeeded in writing a book which is simple and brilliant, deep and witty, short and far-ranging. This is mathematics teaching at its best." -- J.-M. L vy-Leblond, European Journal of PhysicsBrief and readable, this introduction to nonstandard analysis is based on the axiomatic IST (internal set theory) approach. The two-part treatment starts with a clear, rigorous exposition of theory, followed by self-contained chapters on applications. Exercises appear at the conclusion of each chapter, with hints in addition to full solutions. Theoretical topics include idealization, standardization and transfer, real numbers and numerical functions, continuity, differentiability, and integration. Chapters involving applications cover invariant means, approximation of functions, differential equations, perturbation of a Green function, and an invariant subspaces problem.
Binding Type: Paperback
Publisher: Dover Publications
Published: 07/19/2011
ISBN: 9780486432793
Pages: 156
Weight: 0.52lbs
Size: 9.44h x 5.94w x 0.39d
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4.3 ★★★★★
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Product Reviews
★★★★★ 5
Size 8.5 in coral
Size: 8.5, Color: Coral Leather
Such a lovely colour! Was easy to wear on the first time. Comfortable and sturdy. Fit true to size and well priced. Very stylish
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025
★★★★★ 5
Elegant look
Size: 8.5, Color: Champagne
Beautiful and delicate shoes. Look very minimal. Comfortable enough!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2025
★★★★★ 4
Super comfy, but side strap is a bit annoying
Size: 9, Color: Black Leather
Honest review of these shoes that I just wore to a wedding. They are SO comfortable, I wore them all night and didn't need to take them off. The only issue is that since the one strap just goes along the one side of the top of your foot, I did feel like it kind of pushed the shoe to the side. It's hard to describe, but when I was walking sometimes I could feel my food shifting off my shoe on the side.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2025
★★★★★ 3
Comfy shoe, Not a great dupe
Size: 6.5, Color: Black Leather, Size: 6.5, Color: Black Leather
These are so cute and comfy and I love them. Minus two stars because I specifically bought them for the little silver SM on the bottom so they’d look better than the ones at Walmart. These did not come with the little silver logo on the bottom.
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Reviewed in the United States on March 9, 2026
★★★★★ 1
Super cute but came damaged & really annoying to walk in
Size: 8, Color: Black Leather, Size: 8, Color: Black Leather
Super cute but mine came damaged and the straps don’t stay up great…
I love Steve Madden shoes, and own a few pairs already, so I had high hopes for these heels.
I ordered these for a wedding coming up and
I hadn’t opened the package right away as I was out of town, when I got back I was so excited to try them on only to find that they came already scuffed on the toes and heels!! It looked like they had been worn multiple times already, so that was upsetting.
In terms of fit, I ordered a size 8, and it fit true to size as far at the sole goes, as for the strap that goes from in between your toes and around your heel, it falls off after taking 3 steps and is honestly really annoying!
The strap that goes across the top of your foot was also wayyy loose on my feet and didn’t help the other strap stay in place much making it super difficult to walk in them, every step felt like they were about to fly off my feet!
Unfortunately, I will be returning them.
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Reviewed in the United States on May 15, 2025
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