Báo cáo toán học: "Stapled Sequences and Stapling Coverings of Natural Numbers" doc

... [8]. 5OpenProblems The concepts of stapled sequences and stapling coverings introduced and discussed above lead to some unsolved problems, as follows. 1. What is the exact relationship of cutoff and expense? Can ... fact, as shown below, stapling coverings exist for all N ≥ 17. 4 Efficient Stapling Coverings An interesting characteristic of stapling covering is the ra...

Ngày tải lên: 07/08/2014, 06:20

Ngày tải lên: 05/08/2014, 15:20

... and multiple edges. For a graph G, we denote by V (G) and E(G) the vertex set and the edges set of G respectively. The complement of G is denoted G. The neighborhood of v ∈ V (G) is the set of ... beginning and the end of the interval. The record now consists o f a list of vertices in the lower part, a separator, and a list of vertices in the upper par t containing at...

Ngày tải lên: 07/08/2014, 21:21

... sequence of the same length. The set of all sequences of either type can naturally be viewed as a rooted tree: the nodes on level n of the tree correspond to the sequences of length n, and the ... trees, and therefore a unique bijection between tournament sequences and Meeussen sequences which respects the ideas of extending or truncating a sequence. To better unders...

Ngày tải lên: 07/08/2014, 06:20

... statistics on both of these structures are related under Γ and prove that some of the statistics are equidistributed. Section 4 looks at properties of restricted sets of matrices and ascent sequences ... distribution of zeros ( x), or equivalently, the distribution of rmax(ˆx), is the same as the distribution of the length of the first strictly increasing subsequence of...

Ngày tải lên: 08/08/2014, 12:22

... the height of GaSb/In 0.53 Ga 0.47 As QDs. (a) The AFM image of GaSb/In 0.53 Ga 0.47 As QDs, (b) histogram of the height of GaSb/In 0.53 Ga 0.47 As QDs, and (c) the STEM image of GaSb/In 0.53 Ga 0.47 As ... dependence of the PL peak energies over the third root of the excitation density [20]. The inset of Figure 3b shows the linear dependence of the PL peak energies...

Ngày tải lên: 20/06/2014, 20:20

... elements of Zn, Mn, O, and adventitious C (a). The high-resolution XPS spectra of Zn (b) and Mn (c) species. Figure 4. Illustration of the formation process. Figure 5. Raman scattering (a) and ... well [31]. The XPS data of Zn2p and Mn2p further provide evidences for the incorporation of Mn 2+ ions into ZnO. To obtain a better understanding of the formation of...

Ngày tải lên: 20/06/2014, 20:20

... necessity and in this regard, plant essential oils may offer a great potential and hope. Several studies have reported the efficacy of antibacterials obtained from the essential oils of various ... the best of the authors’ knowledge, there are no reports about the chemical content and biological effect of the essential oils of L. resedifolia. There no reports on the essenti...

Ngày tải lên: 20/06/2014, 20:20

... of some bioactive compounds such as ß-lactams [16–18], and employed as ligands for the complexation of metal ions [19]. SBs and their complexes are largely studied because they interested and ... functional group of IMHC. The appearance of a broad strong band in the IR spectra of IMHC in 3421 cm –1 is assigned to N–H stretching vibrations of the primary amine group. The...

Ngày tải lên: 20/06/2014, 20:20

... ) = b 0 ln 2 (s)+b 1 ln(s)+2b 2 a 0 ln 2 (s)+a 1 ln(s)+2a 2 . (24) Properties of transfer fu nctions of this type will be the subje ct of the remain der of the paper. Hartley and Lorenzo Advances in Difference Equations 2011, ... extensively to control a variety of systems [25]. The purpose of this paper is to provide an understanding of the ln(s) operator, the Laplace-domain...

Ngày tải lên: 20/06/2014, 21:20