Báo cáo toán học: " Extending Arcs: An Elementary Proof" ppsx

... of tar- get language sentences is impracticable (τ is an infinite set), the translation sentence is usually built incremen- tally, composing partial translations of the source sen- tence, which ... words. In contrast, the translation con- text is differently taken into account. Whereas phrase- based decoders employ translation units uncontextual- ized, MARIE takes the translation unit contex...

Ngày tải lên: 31/03/2014, 01:20

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Ngày tải lên: 05/08/2014, 09:46

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Ngày tải lên: 05/08/2014, 09:46

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Ngày tải lên: 05/08/2014, 09:46

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Ngày tải lên: 05/08/2014, 10:20

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Ngày tải lên: 05/08/2014, 15:20

... Finally people concentrate on the investigation on some combinatorial parameters such as the sum numb er and the integral sum numb er of some graphs (see [6, 7, 8]). Indeed, there are many problems ... Zhou, and Yanqin Feng three categories. Firstly, one tries to find some new integral sum graphs (see [1, 3, 4]). Secondly, one tries to construct some new integral sum...

Ngày tải lên: 06/08/2014, 05:20

... necessary conditions of Hopfian and Co -Hopfian modules. In particular, we show that the weakly Co -Hopfian regular module R R is Hopfian, and the left R-module M is Co -Hopfian if and only if the left R[x]/(x n+1 )- module M[x]/(x n+1 ) ... R[x]/(x n+1 )- module M[x]/(x n+1 ) is Co -Hopfian, where n is a positive integer. 2000 Mathematics Subject Classification: Keywords: Hopfian modul...

Ngày tải lên: 06/08/2014, 05:20

... Australia Abstract: The shadow of a collection A of k -sets is defined as the collection of the ( k − 1)-sets which are contained in at least one k -set of A.Given|A|,thesizeof the shadow is minimum when A is the ... minimize the shadow then you have to take the first sets in the squashed order. This is a consequence of the Kruskal-Katona theorem [4, 3]. Before...

Ngày tải lên: 07/08/2014, 06:20

... expressed as a rational linear combination of products of single and double Euler sums of weight n. We define the weight of a product of Euler sums as the sum of the arguments appearing in the product. ... theorem, where we treat the triple sums as unknowns. Thus we then know that there is an evaluation of the triple sums in terms of rational linear combinations of...

Ngày tải lên: 07/08/2014, 06:20

... ,v n }ofnvertices,wesaythatalabeledtournamentT  onVisconsistentwithH ifT  isisomorphictoTandcontainsalledgesinH.Considerthefollowingprocedureforproducing anisomorphismcertificate.Initially,defineH 0 =∅andletT 0 bethesetofalltournamentsonV whichareconsistentwithH 0 (thatis;thesetofalltournamentswhichareisomorphictoT.)Note thatT 0 containsn!/|Aut(T)|tournaments,whereAut(T)istheautomorphismgroup...

Ngày tải lên: 07/08/2014, 06:20

... into an infinite sequence of consecutive intervals I 0 ,I 1 , ANALYSIS OF AN ASYMMETRIC LEADER ELECTION ALGORITHM Svante Janson Wojciech Szpankowski ∗ Department of Mathematics Department of Computer ... asymptotics of the mean and the variance of the height. The next Theorem 2 provides an asymptotic expression for the distribution of the height. We close this secti...

Ngày tải lên: 07/08/2014, 06:20

... (2005), #N6 4 Extending Arcs: An Elementary Proof T. Alderson ∗ Department of Mathematical Sciences University of New Brunswick, Saint John, N.B., Canada talderso@unb.ca Submitted: Jan 19, 2005; ... K. An arc is said to be complete if it possesses no extending points. A line  is said to be a tangent (resp. secant)ofanarcK if  meets exactly one point (resp. two points) of K. In...

Ngày tải lên: 07/08/2014, 08:22

... x j x i + x j Hf(B k,2n ). the electronic journal of combinatorics 12 (2005), #N9 5 A Pfaffian–Hafnian Analogue of Borchardt’s Identity Masao ISHIKAWA Faculty of Education, Tottori University Koyama, Tottori, ... there appeared a bijective proof of Borchardt’s identity (see [13]). It will be an interesting problem to give a bijective proof of (7) and (8). the electronic journ...

Ngày tải lên: 07/08/2014, 08:22

... ab, with the vertices m, n of M and c of L replacing the vertices x, y of X and a of ab, respectively; and (ii) invocation of Claim 3.6 is replaced by invocation of Claim 3.9. The proof of the ... vertices of degrees d 1 and d 2 . Few graphs with on-line degree Ramsey number greater than 3 have hitherto been identified. In this paper, we present the following classi...

Ngày tải lên: 08/08/2014, 14:23