Báo cáo toán học: "Weakly Self-Avoiding Words and a Construction of Friedman" ppt

... a Construction of Friedman Jeffrey Shallit ∗ and Ming-wei Wang Department of Computer Science University of Waterloo Waterloo, Ontario, Canada N2L 3G1 shallit@graceland.uwaterloo.ca m2wang@math.uwaterloo.ca Submitted: ... non-weakly -self-avoiding words that are minimal in the sense that any proper prefix is weakly self-avoiding. Now we use a classical breadth-first tree trave...

Ngày tải lên: 07/08/2014, 06:22

... abcacbacabacbcabacabcacbcabacbcacba (# a = 13, # b = 10, # c = 12) , w 2 = abcacbcabacbabcbacabcbabcabacbcacba (# a = 12, # b = 12, # c = 11) , w 3 = abcacbacabacbcabacabcbabcabacbcacba (# a = 13, # b = 11, # c = 11) , (20) of ... exponentially with n. Denoting the sets of ternary square-free words of length n by A n ,wehave A 0 = {λ}, A 1 = {a, b, c}, A 2 = {ab, ac, ba,...

Ngày tải lên: 07/08/2014, 08:20

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Ngày tải lên: 05/08/2014, 15:21

... central exponent of linear differential algebraic equations (DAEs) similar to the one of linear ordinary differential equations (ODEs), and use it for investigation of asymptotic stability of the DAEs. 1. ... system of ordinary differential equations (ODEs) and a system of algebraic equations so that we can use methods and results of the theory of ODEs. Many results on st...

Ngày tải lên: 06/08/2014, 05:20

... Huneke and D. Eisenbud, Cohen-Macaulay Rees algebras and their special- ization, J. Algebra 81 (1983) 202–224. 4. Ph. Gimenez, M. Morales, and A. Simis, The analytical spread of the ideal of codimension ... forms of degree at most 3, and their analytic spreads are 3. In this example, due to Theorem 2.1, we always have that the analytic spread of I L is 3 independently of th...

Ngày tải lên: 06/08/2014, 05:20

... way of viewing a SOMA(k, n). Let n ≥ 2andk≥0, and A be a set of permutations of {1, ,n}.ThenAis said to be a SOMA(k,n)ifand only if • for all i, j ∈{1, ,n} there are exactly k elements of A mapping ... set) are both subSOMAs of A. IfBis a subSOMA(k  ,n)ofAthen A \ B is a subSOMA(k − k  ,n)ofA.ThusAis inde- composable if and only if A and ∅ are the only sub...

Ngày tải lên: 07/08/2014, 06:20

... the edges of all white a i and black b i vertices on one side of , and the edges of all black a i and white b i vertices on the other side of .LetG + be the subgraph on one side of ,andG − the ... (4) There is an analogous equation for the second region on the right-hand side of (3), and the last term in (4) also appears in this. As we are considering parity, these...

Ngày tải lên: 07/08/2014, 08:22

... larger than n − 1 and let A be a skew diagram which has one or more columns of length n. Rearranging the parts of A gives again a partition α whose corresponding character satisfies [α] ∈ [A] and ... Υ 1 and so again Υ 1 = B 1 . We will now prove that Υ i = B i holds also for i ≥ 2. We have a 1 − 1-relation between the LR-tableaux A of shape A and 1s in the top boxe...

Ngày tải lên: 07/08/2014, 15:22

... 125, Almaty, Kazakhstan askar56@hotmail.com Submitted: Mar 29, 2009; Accepted: Feb 18, 2010; Published: Feb 28, 2010 Mathematics Subject Classification: 0 5A0 5, 0 5A1 5 Abstract We show that the major ... by r[max, i](σ) the set of all right-maximal indices of σ, and let r[max, v](σ) denote the set of all right-maximal values. Note that any right-maximal index is a descent index. In...

Ngày tải lên: 08/08/2014, 12:22

... Special Administrative Region of the People’s Republic of China. References [1] M. Abramowitz and I .A. Stegun. Handbook of mathematical functions with formulas, graphs, and mathematical tables, ... 2 Generalized Bell polynomials and the combinatorics of Poisson central moments Nicola s Privault Division of Mathematical Sciences School of Physical and Mathematical Sciences...

Ngày tải lên: 08/08/2014, 14:22