Báo cáo toán học: "Variations on Descents and Inversions in Permutations" docx

... compilation ê 2008 FEBS Studies on structural and functional divergence among seven WhiB proteins of Mycobacterium tuberculosis H37Rv Md. Suhail Alam, Saurabh K. Garg* and Pushpa Agrawal Institute of ... appearance of purified WhiB1 , WhiB2 , WhiB5 , WhiB6 and WhiB7 indicated the presence of an iron–sulfur cluster. To identify and confirm the presen...

Ngày tải lên: 18/02/2014, 12:20

... ) -iteration for finding a fixed point of continu- ous mappings on an arbitrary interval. Then, a necessary and sufficient condition for the strong convergence of the proposed iterative methods for continuous ... and nondecreasing functions. In this article, we are interested to employ the concept of W -mappings and K- mappings for approximation of a sol...

Ngày tải lên: 20/06/2014, 20:20

... was 7 Integrated acoustic echo and background noise suppression technique based on soft decision Yun-Sik Park 1 and Joon-Hyuk Chang ∗2 1 School of Electronic Engineering, Inha University, Incheon ... efficient integrated acoustic echo and noise suppression algorithm using the combined power of acoustic echo and background noise within a soft deci...

Ngày tải lên: 20/06/2014, 20:20

... Fully formatted PDF and full text (HTML) versions will be made available soon. Inequalities for convex and s -convex functions on Delta=[a,b]x[c,d] Journal of Inequalities and Applications 2012, ... dierentiable mapping on = [a, b] ì [c, d] . If    ∂ 2 f ∂t∂s    q , q > 1, is a convex function on the co-ordinates on ∆, INEQUALITIES FOR CONVEX AND s...

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 05/08/2014, 10:20

Ngày tải lên: 05/08/2014, 10:20

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Ngày tải lên: 05/08/2014, 15:20

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Ngày tải lên: 05/08/2014, 15:20

... new class of admissible pairs of triangular sequences and prove a bijection between the set of admissible pairs of triangular sequences of length n and the set of parking functions of length ... Coding parking functions by pairs of permutations Yurii Burman Independent University of Moscow, 121002, 11, B.Vlassievsky per., Moscow, Russia burman@mccme.ru Michae...

Ngày tải lên: 07/08/2014, 07:21

... operations that preserve well-coveredness under certain conditions may be found in [8], in- cluding the corona, the conjunction, the disjunction, and the Cartesian product of graphs. The case of the ... well-coveredness preserving operations. 2.1 Disjoint Union and the Join Let G 1 and G 2 be well-covered graphs. Then the disjoint union G 1  G 2 is also well- covere...

Ngày tải lên: 07/08/2014, 08:20

... We prove analogues of MacMahon’s equidistribution theorem for the group of signed even permutations and for its subgroup of even -signed even permutations. 1 Introduction A classic theorem by MacMahon ... q i−1 +2q i ). 5 Even -signed Even Permutations We denote by D n the group of even -signed permutations, that is the subgroup of B n consisting of all the signed permu...

Ngày tải lên: 07/08/2014, 08:22

... of (2) are strongly connected to q-binomial coefficients, which have a combinatorial interpretation of the number of inversions in a permutation obtained by concatenating two increasing runs of fixed ... ac- companied by corresponding variations of inversions. For alternating descents it seems reasonable to consider alternating inversions defined in a similar manner as pairs of in- d...

Ngày tải lên: 07/08/2014, 21:20

... relation between face numbers and numbers of missing faces we refer to Nagel [14]. In Section 2 we prove Theorem 1.1 and discuss Conjecture 1.2. In Section 3 we give evidence for Conjecture 1.4 and ... 1)  d−1 k  +  d k  − 2  d+1 k+1  . the electronic journal of combinatorics 16(2) (2009), #R8 8 Remarks on Missing Faces and Generalized Lower Bounds on...

Ngày tải lên: 08/08/2014, 01:20

... product of complex representations and therefore a 1-dimensional complex Z 4 -representation or a 2-dimensional real Z 4 -representation. Following [1, Section 8, p. 271 and Appendix, page 285] we ... any conclusion. The same can be done for the complete symmetry group D 8 , explicitly Index D 8 ,Z S(U 4 ì U 2 ) = 2W and W Index D 8 ,Z . Acknowledgements. Thanks to Anton Dochterman a...

Ngày tải lên: 08/08/2014, 01:20

... between  W S and affine partitions, there are three natural partial orders on affine partitions. Bruhat order and the left weak order on  W S are inherited from  W . Thus, the affine partitions also ... C i,j C k,l is reduced and in  W S if and on l y if a t least one of the following hold: 1. i < k and j < l. 2. k + l > n and i < k and j ≤ l. 3. i + j > n...

Ngày tải lên: 08/08/2014, 01:20