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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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4.5 ★★★★★
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Product Reviews
★★★★★ 5
Great quality
Size: Large, Color: Black Pullover
It’s so soft and comfortable. I wash it a lot and it has held up well so far, I just wish it had pockets but other than. That it’s perfect for work.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfortable Everyday Hoodie
Size: Large, Color: Black Pullover
This hoodie is a great basic to have on hand. The fleece material is soft and comfortable, and it provides just the right amount of warmth for cooler mornings and evenings. The fit was true to size, and it held up well after washing without losing its shape.
My husband likes wearing it for everyday errands, walks, and casual outings. It's comfortable, lightweight enough to layer, and easy to throw on when you need an extra layer.
A solid, affordable hoodie for everyday wear.
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Reviewed in the United States on May 31, 2026
★★★★★ 3
solid basic hoodie - but please don't sew the draw string in Fruit of the Loom!!
Size: XX-Large, Color: Black Pullover
I love these hoodies and actually have a few of them in my wardrobe - I would give them a 5-star as they're very comfortable, hold-up well to wear and tear, and they're pretty warm... They don't shrink or bleed dye in the wash, great stuff.
HOWEVER! They recently started sewing the drawstring in, which is really annoying... I wear the XXL size and the hood is still a bit small for my dome, so I typically don't need the drawstring, but now I can't remove it without trying to remove the stitching and damaging the hood or cutting the ends off, leaving most of them inside the hood - meaning you can't replace the drawstring should you want to (which sometimes I do, like if I'm skiing or what not)...
I also work with power tools, which make loose ends like drawstrings outright dangerous, so I really need to be able to remove them easily - I would give these hoodies a 5-star if they stopped sewing the drawstring in
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Reviewed in the United States on March 19, 2026
★★★★★ 5
Good value
Size: 10.5, Color: Black/Black
They fit and they stay on my feet (I was worried because these are slip-ons).
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Comfortable lightweight sneakers for casual everyday wear
Size: 9.5, Color: Navy
These sneakers feel like a decent value for the price. They are very lightweight, which makes them comfortable and easy to wear throughout the day, though that also means they feel a bit less substantial than more supportive athletic shoes.
I have mainly been using them with business casual office outfits, and they work perfectly well for that kind of light-duty everyday wear. I would not personally use them for anything especially active since they do not offer a ton of support, but for casual use they have been great. I also like how easy they are to slip on and off. I typically wear a size 9.5, and these fit true to size for me.
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Reviewed in the United States on May 22, 2026
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