Báo cáo toán học: "Wilf-equivalence on k-ary words, compositions, and parking

Báo cáo toán học: "Wilf-equivalence on k-ary words, compositions, and parking functions" pptx

... classes of patterns of size 6the electronic journal of combinatorics 16 (20 09), #R58 7Wilf-equivalence on k-ary words, compositions, and parking functionsV´ıt Jel´ınek∗Department of Applied ... also consider analogous problems with in the set of integer comp ositions and the set of parking functions, which may both be regarded as special types of words, and which contain all permutations. ... Atkinson, C. Handley, and D. Holton,Permutations of a multiset avoiding permutations of length 3, Europ. J. Combin. 22(2001) 1021–1031.[2] N. Alon and E. Friedgut, O n the number of permutations...

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Báo cáo toán học: "Operations on Well-Covered Graphs and the Roller-Coaster Conjecture" docx

... Section 5, we develop twonew well-coveredness-preserving operations, the partial join (a generalization of both thedisjoint union and the join) and subgraph miniaturization. Finally, in Section ... any-ordered.In Section 2 we will define the power magnification operation and show that it preserveswell-coveredness (see Section 2.2), and we will then use power magnification to give a short and simple ... in Section 4 by a construction that does slightly better thanthe given lower bound. The basic idea of the proof is to use power magnification alongwith the join and disjoint union to construct...

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Báo cáo toán học: " Aluminium content of selected foods and food products" pptx

... (http://www.theobroma-cacao.de/wissen/wirtschaft/deutschland/konsum/). lBased on normal consumption [44]. mBased on high consumption [44]. nBased on an average consumption of males 13 to 64 years in age per year in Germany [43]. oBased on ... for Nutrition and Food: The National Consumption Study Part 2, Nationwide survey on nutrition of youth and adults; 2008. [43] Himmerich S, Gedrich K, Karg G: Bavarian Consumption Study (BVS) ... concentrations of the ready-for-consumption soups were between 1 and 4 mg kg−1; the dry soups had aluminium concentrations between 5 and 15 mg kg−1. These results suggest that migration...

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Báo cáo toán học: "q-Identities related to overpartitions and divisor functions" potx

... Marne-la-Vall´ee Cedex, FranceAbstract. We generalize and prove two conjectures of Corteel and Lovejoy related tooverpartitions and divisor functions.Submitted: Apr 29, 2004; Accepted: Jun 16, 2005; ... notations (z; q)i=(1− z) ···(1 − zqi−1), and ni=(q; q)n(q; q)i(q; q)n−i.In the next section, we shall show that (1.1) and (1.2) can be obtained from the Newtoninterpolation in ... 83–93.[5] A.M.FuandA.Lascoux,q-identities from Lagrange and Newton interpolation, Adv.Appl. Math., 31(2003) 527–531.[6] L. Van Hamme, Advanced problem 6407, Amer. Math. Monthly, 40(1982) 703–704.[7]...

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Báo cáo toán học: " Remarks on uniform attractors for the 3D nonautonomous Navier-Stokes-Voight equations" pptx

... uniform condition-(C) and weak continuous method toobtain uniformly asymptotical compactness in H1 and H2, Yue and Zhong [11] investi-gated the attractors for autonomous and nonautonomous ... Kapustyan and Valero [7] proved the existence of a weak attractor inboth autonomous and non-autonomous cases and gave a existence result of strongattractors. Kapustyan, Kasyanov and Valero [8] considered ... for autonomous and nonautonomous 3D Navier-Stokes-Voight equations. Discret ContinDyn Syst Ser B. 2011(6-3), 985–1002 (2011)12. Babin, AV, Vishik, MI: Attractors of Evolutionary Equations, Studies...