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Description
Differential ManifoldsThe concepts of differential topology form the center of many mathematical disciplines such as differential geometry and Lie group theory. Differential Manifolds presents to advanced undergraduates and graduate students the systematic study of the topological structure of smooth manifolds. Author Antoni A. Kosinski, Professor Emeritus of Mathematics at Rutgers University, offers an accessible approach to both the h cobordism theorem and the
The concepts of differential topology form the center of many mathematical disciplines such as differential geometry and Lie group theory. Differential Manifolds presents to advanced undergraduates and graduate students the systematic study of the topological structure of smooth manifolds. Author Antoni A. Kosinski, Professor Emeritus of Mathematics at Rutgers University, offers an accessible approach to both the h-cobordism theorem and the classification of differential structures on spheres."How useful it is," noted the Bulletin of the American Mathematical Society, "to have a single, short, well-written book on differential topology." This volume begins with a detailed, self-contained review of the foundations of differential topology that requires only a minimal knowledge of elementary algebraic topology. Subsequent chapters explain the technique of joining manifolds along submanifolds, the handle presentation theorem, and the proof of the h-cobordism theorem based on these constructions. There follows a chapter on the Pontriagin Construction--the principal link between differential topology and homotopy theory. The final chapter introduces the method of surgery and applies it to the classification of smooth structures of spheres. The text is supplemented by numerous interesting historical notes and contains a new appendix, "The Work of Grigory Perelman," by John W. Morgan, which discusses the most recent developments in differential topology.
Binding Type: Paperback
Publisher: Dover Publications
Published: 10/19/2007
ISBN: 9780486462448
Pages: 262
Weight: 0.67lbs
Size: 8.46h x 5.34w x 0.55d
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★★★★★ 5
This is a barrier cream?
I also have very oily skin, so normally I stay away from anything that says barrier or balm. I push skin a lot lol...with max strength tretinoin, glycolic acids, salicylic acids, vitamin C... so there are times when I just need max help from a richer product bc sometimes I take it too far. LRP Cicaplast has been a staple and has saved me many a times.
I bought this bc of the high percentage of ectoin, 5%, and it was so reasonably priced. When I squeezed the tube, I was really worried, it was thicker looking than the Cicaplast. However, when I spread it out, it was SO light and a tiny amount --barely a pea size, was enough to coat my face. It did not feel heavy. Even with my oily skin, I think I could wear this everyday.
As an experiment, I applied any excess on one side of my hand, as I'm right handed, I would apply it on my left hand. I've had this about a week, and right now after doing the dishes, and washing my hands multiple times without any hand cream on it, my right hand is definitely drier than my left hand. My left hand also looks less red and more calm.
This formula is 5 stars for both the effectiveness and the elegant formula. It may yet replace my LRP Cicaplast...we'll see!
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Reviewed in the United States on November 6, 2025
★★★★★ 3
Fungal acne
Triggered fungal acne.
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Reviewed in the United States on February 21, 2026
★★★★★ 1
Full Face Breakout
Small breakouts all over my face within 48 hours of use.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Saved my daughter’s skin
My 21 yr old has gone from clear skin to now having cystic acne and whilst trying to get to the source of it, her skin has been painfully inflamed and constant dark red breakouts. We have tried other professional skincare’s, “no downtime” peels designed for acne, which made it worse etc. This product Finally was what gave her skin some relief, calmed the pain and inflammation, nearly stopped the breakouts and is allowing her skin to heal up. She said it felt so much better immediately after starting using it. And is so grateful for the redness and pain relief.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Tough toy
Color: Wisconsin Badgers, Style: NCAA #1 Fan Toy
Dogs haven't destroyed it so that's 5 stars in my house
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Reviewed in the United States on December 23, 2025