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Description
An Introduction to Algebraic TopologyThis self contained treatment of algebraic topology assumes only some knowledge of real numbers and real analysis. The first three chapters focus on the basics of point set topology, offering background to students approaching the subject with no previous knowledge. Readers already familiar with point set topology can proceed directly to Chapter 4, which examines the fundamental group as well as homology groups and continuous mapping, barycentric
This self-contained treatment of algebraic topology assumes only some knowledge of real numbers and real analysis. The first three chapters focus on the basics of point-set topology, offering background to students approaching the subject with no previous knowledge. Readers already familiar with point-set topology can proceed directly to Chapter 4, which examines the fundamental group as well as homology groups and continuous mapping, barycentric subdivision and excision, the homology sequence, and simplicial complexes.Exercises form an integral part of the text; they include theorems that are as valuable as some of those whose proofs are given in full. Author Andrew H. Wallace, Professor Emeritus at the University of Pennsylvania, concludes the text with a guide to further reading.
Binding Type: Paperback
Publisher: Dover Publications
Published: 02/27/2007
ISBN: 9780486457864
Pages: 198
Weight: 0.55lbs
Size: 8.40h x 5.40w x 0.60d
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4.0 ★★★★★
Based on 28 reviews
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★★★★★ 2
Beware of a sticky detail
I was looking for a way to organize my kitchen soap, sponges, and bottle brushes. This soap dispenser checked off all of my boxes with a nice stainless steel design making it a great addition to my kitchen counter. Question: after all of these positive aspects why only two stars? Answer: there is a sticker placed onto the dispenser that is so sticky that it is a formidable foe to remove (please review the attached photo). I liked this soap dispenser but the semi permanent sticker is the deal breaker to an otherwise nice product.
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Reviewed in the United States on February 15, 2026
★★★★★ 1
Poor design
Doesn't drain
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Reviewed in the United States on March 31, 2026
★★★★★ 1
Plastic not stainless steel
Absolutely awful not stainless steel but plastic that breaks. Do not waste your money
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Reviewed in the United States on February 14, 2026
★★★★★ 4
Keeps the Sink Area Neat and Organized
This has been really helpful for keeping my sink area clean. The soap dispenser pumps great! The sponge and brush holders keep everything off the counter so that really helps.
The stainless steel looks nice and hasn’t shown any rust so far. It’s compact but holds everything I use daily, and cleaning it is easy. Great little upgrade if your sink area always feels messy.
edited to add: took me about 45 minutes to finally get the sticker label off it was stuck directly on the stainless steel so I had to be really careful peelng it off
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Reviewed in the United States on December 12, 2025
★★★★★ 5
Stainless Steel 3-in-1 Sponge/Brush Holder with soap dispenser for Kitchen
This is an ideal item to organize your sink areas. Perfect for kichens but also for bathroom use. I love the built in soap dispenser. The one I currently have doesn't have a dispenser. And the big liquid soap container is always falling over. Mine irack is bigger but this one is more organied.
Easy to clean. stainless steel. Smaller foot print so it sits right near the faucet easily. 7.3"L x 5.3"W x 6.5"H And, it has drainage holes in the front rack to keep your sponges fresh by quickly drying. I was going to put this in one of our smaller kitchens in a guest house, but I may just snag it for my kitchen!
Good value. Priced right.
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Reviewed in the United States on December 9, 2025
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