Báo cáo toán học: "Pfaffian orientation and enumeration of perfect matchings for some Cartesian products of graphs" doc

... electronic journal of combinatorics 16 (2009), #R52 8 Pfaffian orientation and enumeration of perfect matchings for some Cartesian products of graphs ∗ Feng-Gen Lin and Lian-Zhu Zhang † School of Mathematical ... y and u and v are adjacent in H, or u = v and x and y are adjacent in G. For bipartite graphs, Yan and Zhang in [18] studied the enumeration...

Ngày tải lên: 07/08/2014, 21:21

... is a method for the enumeration and the recursive construction of a class of combinatorial objects, O, by means of an operator ϑ which performs “local expansions” on the objects of O. More precisely, ... word (1) a (1) b (2) b (3) a (3) b (4) a (5) a (3) r (2) g (2) g . the electronic journal of combinatorics 11 (2004), #R60 19 where R, G, P , Q,andR g are the formal power ser...

Ngày tải lên: 07/08/2014, 08:20

... nature of the ISM band has allowed for rapid development and deployment of various wireless technologies such as 802.11 and bluetooth. Since devices are allowed to operate in the same band without ... layer protocols. Most of these involve some form of coopera- tive scheduling [1,2]. Some work has been done to show that time domain signal processing can be used to miti- gate...

Ngày tải lên: 20/06/2014, 21:20

... con- cept of K-mapping for finding a common fixed point of a finite family of nonexpansive mappings and a solution of an equilibrium problem. Applications of K-mappings for fixed point problems and equilibrium ... concept of W -mappings and K- mappings for approximation of a solution of (1.2) for a continuous function on an arbitrary interval and compare which one...

Ngày tải lên: 20/06/2014, 20:20

... use of statistical properties of the channel capacity for the improvement of the system performance can be found in, e.g., [23, 38, 39] and the references therein. c Henceforth, for ease of brevity, ... closed-form approximation has been derived for the LCR of the instantaneous channel capacity. The results are studied for different values of the number of hops as well...

Ngày tải lên: 20/06/2014, 20:20

... echo and the noise signal with a single gain based on soft decision. For this, the noise and echo spectral are separately and efficiently estimated and combined by a single power in the soft decision ... suppression gain based on soft decision without the help of an additional residual echo and noise suppressor. The performance of the proposed algorithm has been found to be supe...

Ngày tải lên: 20/06/2014, 20:20

... China and Russia are the only countries in the world where chili pepper pills are sold. Capsules containing 400 and 600 mg of chili pepper are sold for weight loss; patches and gels are used for ... downloaded, printed and distributed freely for any purposes (see copyright notice below). Articles in International Journal of Emergency Medicine are listed in PubMed and arc...

Ngày tải lên: 20/06/2014, 20:20

... concept and design of the study and has enhanced the intellectual content of the manuscript. JR has contributed in acquiring the dosimetric data, in analyzing and interpreting this set of data, and ... analyzing and interpreting this set of data, and in drafting the manuscript. MH has contributed in the concept and design of the study, in acquiring data, in analyzi...

Ngày tải lên: 20/06/2014, 20:20

... if v 0 Î X and w Î X satisfy (Dl) and if (D4) holds, then, by (6.1) , T [q] is continuo us at w for some q Î N and, since v mq+k = T [q] (v (m-1)q+k ) for k = 1,2, , q and m Î N and, for each k ... 2011:90 http://www.fixedpointtheoryandapplications.com/content/2011/1/90 Page 7 of 24 Assume that v 0 Î X and w Î X satisfy (Dl). By (6.1) and (D3), we have that w = T [q] (w)...

Ngày tải lên: 20/06/2014, 21:20

... Rd p (fx, Tx) for some positive real R and for each p Î P.IfR = 1, then the pair (T, f) is called weakly commuting [10]. For M = X and T a single-valued, the definitions of comp at- ibility and R-weak ... unless state d otherwise, P the family of continu ous seminorms gener- ating the topology of X and K(X) the family of nonemp ty compact subsets of X .For each p Î...

Ngày tải lên: 20/06/2014, 21:20