Báo cáo toán học: "Semicanonical basis generators of the cluster algebra (1) of type A1" pptx

... the elements s 1 , s 2 , . . . together with the cluster monomials x p m x q m+1 for all m ∈ Z and p, q ≥ 0, form a Z -basis of A referred to as the semicanonical basis. As a special case of the ... integer coefficients. the electronic journal of combinatorics 14 (2007), #N4 2 Using the proof of Theorem 2.1, we derive the explicit formulas for the elements x m and s...

Ngày tải lên: 07/08/2014, 13:21

... roles may include the stabilization of the positive charge on the methyl carbon of SAM, or the enhancement of the negative charge on the propionate carboxyl groups of MgD. The rate constants ... methyltransferase steps. The K D for the H ⁄ ID interaction was taken from Jensen et al. 1998 [24], and the K D for the association with ChlM is from Fig. 1. The possib...

Ngày tải lên: 20/02/2014, 02:21

... general case. Utilizing the technique of the modulus of convexity and a new demiclosed principle for nonself-maps of Kazor [24], we establish the we ak con- vergence theorem of the three-step iterative ... most of these articles, the operator T remains a self-mapping of a nonempty closed convex subset C of a uniformly convex Banach space X. If, however, the domain o...

Ngày tải lên: 20/06/2014, 21:20

... . , n, then Lemma 2.2. [15] Let A = (a ij ) be a complex matrix of order n  2. Then the eigenvalues of the ma tr ix of A lie in the region of the complex plane determined by the union of Cassini ... characterized by the degree and the average 2-degree of the vertices. As a matter of fact, we can also utilize other characteristics of the vertex to estimate t...

Ngày tải lên: 08/08/2014, 12:23

... two triangles. If the node does not have either of the above two neighborhood, the graph is indecom- posable. the electronic journal of combinatorics 18 (2011), #P91 24 As an application of the algorithm ... one endpoint of the mid-edge. Taking into consideration the directions of a, b, c, d, there are three cases. • a is the mid-edge of the diamond. In this case...

Ngày tải lên: 08/08/2014, 14:23

... interaction of other parameters in the model and the model structure [10, 28, 29]. For example, in the shrew model in the study of Wang and Grimm [26], one of the factors which was validated was the ... used in the evaluation of the environmental fate of pesticides could be to produce a set of scenarios which aim to cover 90% of the agricultural area in th...

Ngày tải lên: 20/06/2014, 20:20

... methodology and the complexity of the models. Although parts of population models, e.g. the simulation of developmental stages or the simulation of survival, may be rather easy to understand, the existence ... interaction of other parameters in the model and the model structure [10, 28, 29]. For example, in the shrew model in the study of Wang and Grimm [26],...

Ngày tải lên: 20/06/2014, 20:20

... on the wireless error model therein presented for mobile Internet connections. Fig. 1 illustrates the set of impaired video sequences selected for the aims of this paper and the results from the ... devoted to the study of multimedia services in their context of use. In [4] authors overview several studies concerning the key influence of the context in service quality...

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 05/08/2014, 15:21