Báo cáo toán học: "HARMONIC FUNCTIONS ON MULTIPLICATIVE GRAPHS AND INTERPOLATION POLYNOMIALS" docx
... harmonic function on Y afforded by Proposition 1.3 vanishes on all Young diagrams with more than l rows. Thus, one can consider such a function as a harmonic function on the subgraph Y(l)ofY consisting ... harmonic functions on certain graded graphs: the Young lattice and its generalizations. Such functions first emerged in harmonic analysis on the infinite symmetric group. Our...
Ngày tải lên: 07/08/2014, 06:20
Ngày tải lên: 05/08/2014, 15:21
... ad- dress configuration time ( ¯ T conf ), by simply consider- ing the two possible configuration situations: (i) there is on average multi-hop connectivity between the un- configured vehicle and the ... evaluated the config- uration time ¯ T conf under different traffic conditions and for different deployment configuration parame- ters. The traffic conditions are defined by the vehicu- lar density...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: "A note on major sequences and external activity in trees" pdf
... Decomposition Lemma, E 1 and E 2 partition {1, ,n−1}. Set S 1 =(s i :i∈E 1 ),S 2 =(s i :i∈E 2 )−s ∗ n . By part 3 of the Decomposition Lemma, S 1 and S 2 are major sequences of length l − 1andn−l, ... Recursively obtain the trees T 1 = f(S 1 )andT 2 =f(S 2 )on{ 0, ,l−1} and {0, ,n−l} respectively, with e(T 1 )=a(S 1 )ande(T 2 )=a(S 2 ), and thus by Part 4 of the Decomposition Lemma e...
Ngày tải lên: 07/08/2014, 06:22
Báo cáo toán học: " Random walks on generating sets for finite groups" docx
... =inf f=constant e∈E f 2 (e) x f 2 (x)d x log f 2 (x) y f 2 (y)π(y) (8) where f ranges over all non-constant functions f : V → R and π is the stationary distribution of the nearest neighbor random walk on Γ. In a recent paper [9], Diaconis and Saloffe-Coste show that ∆ TV (t)≤e 1−c if ... P. Diaconis, R. L. Graham and J. A. Morrison, Asymptotic analysis of a random walk on a...
Ngày tải lên: 07/08/2014, 06:22
Báo cáo toán học: " A Note on the Asymptotics and Computational Complexity of Graph Distinguishability" docx
... L ∈ Σ P k .Above, the notation · , · refers to some canonical pairing function. With these definitions, NP = Σ P 1 ,coNP=Π P 1 ,andtheclassesΣ P k and Π P k form a neat hierarchy containing P and lying inside ... the definition of AM. Based on constructions like those of [12, 10, 11], one has AM ⊂ Σ P 2 ∩ Π P 2 ,com- pleting the claim in the introduction. One naturally wonders at the re...
Ngày tải lên: 07/08/2014, 06:22
Báo cáo toán học: "Parking functions of types A and B" ppsx
... 4.1. Thus we have two actions of S n , one on factorizations and one on parking functions, and the map we are looking at is obviously covariant with respect to these actions, therefore in order ... factorization to get a new factorization. One checks that this extends to an action of S n on the set of factorizations. This corresponds to the local action of S n on V NC n+1 in [S],...
Ngày tải lên: 07/08/2014, 06:23
Báo cáo toán học: "Parking functions, stack-sortable permutations, and spaces of paths in the Johnson graph" docx
... the connection between initial positions and parking functions, and to Sara Billey for many useful comments, including (but not limited to) the possible relation between safe permutations and ... p, q is an initial position and that the corresponding safe permuta- tion is (421365). Moreover, p, q is feasible if and only if n ≥ 9(=12− 3), and the length of a longest increasing sub...
Ngày tải lên: 07/08/2014, 07:21
Báo cáo toán học: "A note on packing graphs without cycles of length up to five" docx
... m 5. 1 Introduction We deal with finite, simple graphs without loops and multiple edges. We use standard graph theory notation. Let G be a graph with the vertex set V (G) and the edge set E(G). ... 727–732. the electronic journal of combinatorics 16 (2009), #N30 3 A note on packing graphs without cycles of length up to five Agnieszka G¨orlich ∗ , Andrzej ˙ Zak University of Science...
Ngày tải lên: 07/08/2014, 21:21
Báo cáo toán học: "A Note on Commuting Graphs for Symmetric Groups" potx
... other cycles, as long as the permutation in question is even. The next result shows that we can guarantee this if m is even. In the proofs of Propositions 3.8 and 3.9, the permutations appearing ... acting upon the ‘positions’; that is to say (23) applied to an m-cycle c in Sym{1, 2, . . ., m} means ‘interchange the second and third element of c’ and not ‘interchange the numbers 2 and...
Ngày tải lên: 07/08/2014, 21:21