Báo cáo toán học: "A semigroup approach to wreath-product extensions of Solomon’s descent algebras" pdf

... for improving the exposition. the electronic journal of combinatorics 16 (2009), #R21 7 A semigroup approach to wreath-product extensions of Solomon’s descent algebras Samuel K. Hsiao Mathematics Program Bard ... 20M25 Abstract There is a well-known combinatorial model, based on ordered set partitions, of the semigroup of faces of the braid arrangement. We generalize...

Ngày tải lên: 07/08/2014, 21:21

... devoted to give a simple probabilistic proof of the above result. To provide such a proof we make use of a well known correspondence which transform the problem into that of counting the maxima of ... Cov  f, T (k) f  , (14) the electronic journa l of combinatorics 17 (2010), #R168 11 A probabilistic approach to the asymptotics of the length of the longest alternating...

Ngày tải lên: 08/08/2014, 12:23

... ecosystem services of freshwater sediments: the need for a “triad plus x” approach. Journal of Soils and Sediments 2011. 4. Hollert H, Dürr M, Erdinger L, Braunbeck T: Cytotoxicity of settling particulate ... feasibility of combin- ing hydrodynamical with ecotoxicological approaches was clearly demonstrated. This new interdisciplinary approach represents a powerful and promising to...

Ngày tải lên: 20/06/2014, 21:20

... fit into (N N ), and thus we can again apply to Q the same procedure as in [13] to obtain a new Young tableau t µ of the shape complementary to that of P . • Step 3. Once again referring to the ... belongs to M (N) m , we can state that in P there is exactly one occurence of each one of N +1, ,N + m, and that the corresponding boxes form a ribbon r numbered from bottom to t...

Ngày tải lên: 07/08/2014, 13:21

... electronic journal of combinatorics 15 (2008), #R101 2 2. Dom(F ) collapses onto the boundary of an r−dimensional cross-polytope, where r is the number of edges of F  . Proof. (1) By Lemma 4.9 ... journal of combinatorics 15 (2008), #R101 18 Conversely, let σ be a face of  OF( G) : z → u  . We need to show that σ ∪ {y → x} is a face of  OF( G), z → u  : equivalently we...

Ngày tải lên: 07/08/2014, 21:20

... + 1 x n  . the electronic journal of combinatorics 17 (2010), #N30 3 A New Approach to the Dyson Coefficients Sabrina X.M. Pa ng College of Mathematics and Statistics Hebei University of Economics and Business Shijiazhuang ... + 1 x n . This completes the proof. Now we are ready to prove Theorem 1.2. Without loss of generality, we may assume r = 1 and s = 2 in Theorem 1.2. A new...

Ngày tải lên: 08/08/2014, 11:20

... tagged version of the corpus. As tree drawing proceeded, amendments and extensions to the rules for tree drawing and the inventory of hypertags were proposed, on the basis of problems encountered ... or part of speech of each word token in the corpus. Error analysis and subsequent modification to the system resulted in over 96 per cent of word tags being correctly a...

Ngày tải lên: 22/02/2014, 09:20

... measure of enzyme specificity To determine whether the lack of phenotype of omcA – omcB – strains observed during anaerobic growth on either of the electron acceptors U(VI) and Se(VI) is due to the ... insertion mutants of MR-1, and analyzed them in terms of dissimilatory reduction of a variety of metals, i.e. Fe(III), V(V), U(VI), and Se(VI). A ‘whole cell’ kinetics appro...

Ngày tải lên: 07/03/2014, 09:20

... research aim of a paper, or a claimed gap in the literature. Similarly, in the task of automatic routing of customer emails and automatic answering of some of these, the de- tection of threats of legal ... may be due to the larger amount of data available to Google Scholar. This seems to outweigh the dis- advantage of only being able to use POS patterns with Google S...

Ngày tải lên: 08/03/2014, 02:21

... terms to the category word in order to exagger- ate, to evoke and thereby to be more effective. The first constituent of our approach uses the pattern “as property as *” with the addition of “property ... potential to be very appeal- ing to the customers. In more than 76% of the cases, a humorous name is the product of the combination of appropriate ingredients. In...

Ngày tải lên: 23/03/2014, 14:20