Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Fractional Graph Theory: A Rational Approach to the Theory of GraphsA unified treatment of the most important results in the study of fractional graph concepts, this volume explores the various ways in which integer valued concepts can be modified to derive nonintegral values. It begins with the general fractional theory of hypergraphs and presents in depth coverage of fundamental and advanced topics. Subjects include fractional matching, fractional coloring, fractional edge coloring, fractional arboricity via matroid
A unified treatment of the most important results in the study of fractional graph concepts, this volume explores the various ways in which integer-valued concepts can be modified to derive nonintegral values. It begins with the general fractional theory of hypergraphs and presents in-depth coverage of fundamental and advanced topics. Subjects include fractional matching, fractional coloring, fractional edge coloring, fractional arboricity via matroid methods, and fractional isomorphism. The final chapter examines additional topics such as fractional domination, fractional intersection numbers, and fractional aspects of partially ordered sets.Challenging exercises reinforce the contents of each chapter, and the authors provide substantial references and bibliographic materials. A comprehensive reference for researchers, this volume also constitutes an excellent graduate-level text for students of graph theory and linear programming.
Binding Type: Paperback
Publisher: Dover Publications
Published: 11/16/2011
ISBN: 9780486485935
Pages: 211
Weight: 0.65lbs
Size: 8.90h x 5.90w x 0.60d
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 661 reviews
Sort
Product Reviews
★★★★★ 5
Todo según lo esperado
Color: Dark Brown
Todo como lo esperado
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Great for blue collar guys
Color: Dark Brown
Perfect size for dumping pockets, phone, knife and keys after work or when switching pants
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
★★★★★ 5
Effective & Attractive with Wireless Charging
Color: Blue, Color: Blue
This "valet" organizer, which is the first time I've heard that term for a product like this, is nearly perfect. For me, it checks all of the boxes and in a perfect world, I would have opted for a smaller piece with only three compartments for mobile, wallet, and keys.
It's well made and quite attractive, especially the blue (favorite color, so I'm biased). The only feature I'm not a fan of is how the removeable, wireless charging pad was implemented, which sits up on a small lip at a slight incline. However, I'm not complaining one bit as the wireless charging is great, and it's a differentiator that determines the value of the piece. I would have preferred the pad be built into the piece, however the angle of it does make it easy to grab opposed to using your finger(s) to pry it up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2024
★★★★★ 5
Great nightstand valet for everyday items.
Color: Black+Green
Nice valet to add to a nightstand. Conveniently spaced sections to hold everyday items. Charging pad works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 4
Power Adapter Not Included
Color: Brown +Wireless
I'm initially impressed with this valet tray. I purchased two for my husband: one for his nightstand and one for his dresser, as he likes to keep things organized. We liked the idea of the wireless charging capabilities, but were a little disappointed to discover that the power adapter (wall plug) is not included with the tray. The tray includes a charging pad and a cord, but no wall plug. We don't have an extra pair in the house, so we'll have to wait until a pack arrives before we can test out the charging capabilities. That aside, the trays are a handsome set. I think 20% larger might serve us a tad better, but this will do very nicely for now. We're able to fit almost everything we need in the tray and that will leave the tables looking much tidier, even if one or two items don't quite make it in.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025