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Description
Elliptic Partial Differential Equations Elementary ViewpointThis is a textbook that covers several selected topics in the theory of elliptic partial differential equations which can be used in an advanced undergraduate or graduate course. The book considers many important issues such as existence, regularity, qualitative properties, and all the classical topics useful in the wide world of partial differential equations. It also includes applications with interesting examples. The structure of the book is
This is a textbook that covers several selected topics in the theory of elliptic partial differential equations which can be used in an advanced undergraduate or graduate course.
The book considers many important issues such as existence, regularity, qualitative properties, and all the classical topics useful in the wide world of partial differential equations. It also includes applications with interesting examples.
The structure of the book is flexible enough to allow different chapters to be taught independently.
The book is friendly, welcoming, and written for a newcomer to the subject.
It is essentially self-contained, making it easy to read, and all the concepts are fully explained from scratch, combining intuition and rigor, and therefore it can also be read independently by students, with limited or no supervision.
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4.5 ★★★★★
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★★★★★ 5
Office desk organizer
needed something to tidy up my messy desk and matches my standup desk in office
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Reviewed in the United States on January 22, 2026
★★★★★ 4
Wood & Metal Desk Organizer – Sturdy but Assembly Needed
This desk drawer organizer and pen holder is made from wood and painted metal and looks nice once assembled. The type of wood isn’t specified, but it feels heavy and solid. The pen holder requires assembly, which can be a bit tricky since no instructions are included. You need to attach the two wooden sides to the wooden bottom first, then add the metal sides. The screws are included, along with two mini screwdrivers, but the tools are very small and the wood is very hard, so I needed help to finish assembly.
Once assembled, the items look attractive and feel sturdy. My organizer arrived with a small chip in one of the metal pieces, leaving a spot where the black paint is missing, which is noticeable. The organizer works best as shown in the listing photos — for larger items like glasses, wallets, cell phones, or keys. The sides of the organizer aren’t completely flush with the bottom, so very small items like paper clips could get stuck or fall through.
To protect desktops, the organizer comes with four stick-on felt pads for the corners, and the pen holder has a rectangular felt pad that you attach yourself. Overall, it’s attractive, sturdy, and useful, but assembly can be a little challenging.
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Reviewed in the United States on January 2, 2026
★★★★★ 5
Desk organizer
I like the wood and metal look. The pencil cup was easy to put together and it is sturdy. It is great to have some organization on your desk.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
The Best Cable Management Solution for IT Work — Reusable, Reliable, and Professional
Size: 150Pk - 8" x 1/2", Style: Cord Wrap Cable Ties, Color: Black and Gray
TL;DR: I’ve been using these VELCRO Brand cable ties for years as an IT field tech. They hold tight, are endlessly reusable, and keep cables tidy. Great for both home and professional setups.
Full Review:
As an IT field technician, I’ve tried countless ways to keep cables organized, and these VELCRO Brand cable ties are simply the best. They’re reusable, strong, and easy to reposition — ideal for network racks, AV installs, or just cleaning up cords around the house.
Functionality:
Top-notch. The hook-and-loop material is aggressive enough to hold firmly, but not so sticky that it clings to everything else in your tool bag. They wrap cleanly, stay put, and release easily when you need to re-route cables. They’re reliable enough for professional jobs and flexible enough for home use.
Storage Capacity:
Each strap holds more than you’d expect — I rarely need to link two together. They handle thick cable bundles or power cords just fine on their own. And when I do need more length, it’s easy to join a second strap for a larger wrap.
The two-color mix (black and gray) is great for keeping different cable types separated — for instance, network vs. power. The thin profile also helps keep bundles neat and professional-looking.
These have earned me plenty of compliments from higher-ups for clean cable runs and well-organized setups. Once you switch to these, you’ll never want to deal with cutting zip ties again.
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Reviewed in the United States on October 12, 2025
★★★★★ 5
VELCRO Ties Are the Standard to Rely On
Size: 150Pk - 8" x 1/2", Style: Cord Wrap Cable Ties, Color: Black and Gray
I am a big fan of VELCRO brand products because of their quality and utility. I have used their rolls of Velcro hook and loop tape as well as their little patches, and I became a brand loyalist. Yes, there are many other manufacturers, but these are certainly as good as it gets. This product is your very basic, very thin, and very copious supply (for my neighbors in Rio Linda - that means plenty of them). You get two big spools of these little eight (8) inch ties that are adhesive throughout their length - that means you can tie the smallest cables to anything almost up to their full length. If you need a longer wrap - use more than one and just extend the length by piggy backing them. The real advantage of this bulk package is that you are not tempted to save some for later - you have enough to use as many as you like and can happily go tie crazy on all your cords! It's VELCRO party time. We live in an electronic age, and I have a lot of more pricey hook-and-loop specialty ties, and I try to keep a few back as spares. Forget that - with these little ties, I can actually use them and do what I need to get those tangled cords in shape. O.K. maybe I am a geek, but I cook my chicken - dead already, and I believe in independent segregated wiring and not tripping over things or spending time untangling messes when I need to move gear. These big rolls will make your life easier - I use them to attach notes to little jars or vials - to tie two gloves together when I am not wearing them - and other uses even cutting them into smaller pieces. That's one of the advantages of these bulk spools - lots of supply. Yes, the individual ties are dinky thin little things, but they hold very well (why you buy genuine VELCRO) and you don't feel stupid using them up on anything you feel like. They are expendable, and that adds to their ultimate utility. Darned useful product. Buy it - use it; enjoy.
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Reviewed in the United States on February 17, 2024