Báo cáo toán học: "Some properties of unitary Cayley graphs" pdf

... molecular mass of 100 kDa, containing approximately equal quanti- ties of two small heat shock proteins. Keywords: small heat shock proteins; phosphorylation; chaperone activity. Human small heat shock proteins ... time of incubation. Lack of preci- pitation of isolated small heat shock proteins isshownoncurve3. Ó FEBS 2003 Human 20 kDa small heat sh...

Ngày tải lên: 07/03/2014, 15:20

... Some Properties of Preposition and Subordinate Conjunction Attachments* Alexander S. Yeh and Marc B. Vilain MITRE Corporation 202 Burlington ... Hirschman and David Palmer. The exper- iments made use of Morgan Pecelli's noun/verb group annotations and some of David Day's programs. et al., 1994; Brill and Resnik, 1994; Collins and ... I-group's...

Ngày tải lên: 23/03/2014, 19:20

... upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Some properties of an integral operator defined by convolution Journal of Inequalities and Applications ... (http://creativecommons.org/licenses /by/ 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited....

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 05/08/2014, 15:21

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Ngày tải lên: 05/08/2014, 15:21

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Ngày tải lên: 05/08/2014, 15:21

... quasi-periodic word and let any letter in u be covered by a word v. Then we denote u = v ⊗ v ⊗···⊗v. Some Periodicity of Words and Marcus Contextual Grammars 387 However, the other types of Marcus contextual ... set of all hyper primitive words. Remark 1.3. Fig. 1.3 indicates that u is a quasi-periodic word. Fig. 1.3. Vietnam Journal of Mathematics 34:4 (2006) 38...

Ngày tải lên: 06/08/2014, 05:20

... idempotent of S is of form (e, 0), where e 2 = e ∈ R. Proposition 2.1. Let R be a commutative ring and I an ideal of R.LetS = R ∝ I be the trivial extension of R by I.IfS is an ACS-ring, so is R. Proof. ... Rr R (X)=l R (X) for any subset X of R and that any idempotent of R is central. (5) ⇔ (7). Note that l R (aR)=l R (RaR) for any a ∈ R. (5) ⇔ (6). The proof is similar to that...

Ngày tải lên: 06/08/2014, 05:20

... the class of all 4-chromatic graphs. The structure of the red graph is obvious by Corollary, but we do not know which graphs can occur as blue graphs and what are the properties of graphs in which ... on the Wall, a list of conjectures of Graffiti. Ramseyan Properties of Graphs by Ermelinda DeLaVina delavina@math.uh.edu Siemion Fajtlowicz siemion@math.uh.edu Uni...

Ngày tải lên: 07/08/2014, 06:20

... that the graph Γ i is the i-th class of the scheme, and so we indistinctly use the words graph or “class” to mean the same thing. 2 The Proper and Adjacency Polynomials In this section we introduce ... trivial.) Then, by the converse of Theorem 2.5 , it must be Q k  u ≥ 1. On the other hand, in the proof of Theorem the electronic journal of combi...

Ngày tải lên: 07/08/2014, 06:20

... studying combinatorial applications of Hankel matrices and further aspects of orthogonal polynomials was set up by Viennot [76]. Of special interest are determinants of Hankel matrices consisting ... method for solving key equation for decoding Goppa codes”, Information and Control 27, 1975, 87 – 99. [74] U. Tamm, Hankel matrices in coding theory and combinat...

Ngày tải lên: 07/08/2014, 06:22

... one -twin-free graph with n vertices. Then there exists a vertex x ∈ V such that G x is one -twin-free and connected. Proof. In this proof, we use twin, twin-free and terminal for one-twin, one -twin-free ... we say that G is r -twin-free or twin-free. A graph with one vertex is trivially twin-free, and generally we consider graphs with at least two vertices. Twin-free graphs are...

Ngày tải lên: 07/08/2014, 15:22

... 6. In the notation of Lemma 5 the number of common neighbors of distinct vertices a, b in the unitary Cayley graph X n is given by F n (a − b). Proof. Let a, b, z be elements of V (X n ) = Z n = ... a sequence ˜ S of length m which consists of all nonzero eigen- values of X n such that the number of appearences of an eigenvalue is its multiplicity. the electronic journal...

Ngày tải lên: 07/08/2014, 15:22

... proof of Theorem 28 of [4] can also be adapted to hereditary properties of tour- naments, to produce many properties with different exponential speeds, but we spare the reader the details. Of ... proof of Theorem 1. Lemma 7. Let P be a hereditary property of tournaments. If B(P) = ∞, then P contains arbitrarily large structures of Type 1 or 2. Proof. Let P be a hereditary pro...

Ngày tải lên: 07/08/2014, 15:23

... journal of combinatorics 16(2) (2009), #R2 5 Algebraic properties of edge ideals via combinatorial topology Anton Dochtermann TU Berlin, MA 6-2 Straòe des 17. Juni 136 10623 Berlin Germany dochterm@math.tu-berlin.de Alexander ... called the edge ideal of G. We will often speak of algebraic properties of a graph G and by this we mean the corresponding property of the...

Ngày tải lên: 08/08/2014, 01:20