Báo cáo toán học: "ntersecting families in the alternating group and direct product of symmetric groups" potx

Báo cáo toán học: "ntersecting families in the alternating group and direct product of symmetric groups" potx

Báo cáo toán học: "ntersecting families in the alternating group and direct product of symmetric groups" potx

... equality holds in (1), then for any independent set I of cardinality α(Γ 2 ) in Γ 2 , φ −1 (I) is an independent set of cardinality α(Γ 1 ) in Γ 1 . 2 Intersecting families in the alternating group Throughout, ... maximal size in S n are the cosets of point stabilizers. We show that, under mild restrictions, analogous results hold for the alternating group and...
Ngày tải lên : 07/08/2014, 15:22
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Báo cáo toán học: " Code choice in the Chinese as a foreign language classroom" pot

Báo cáo toán học: " Code choice in the Chinese as a foreign language classroom" pot

... concerning the exclusive use of Chinese concerned the building and maintenance of a Sinophone identity. The exclusive use of Chinese was regarded as sign of a pure Sinophone and mixing-codes ... minority groups in the People’s Republic of China (Hu and Alsagoff 2010; Zhou and Sun 2004) and Taiwan (Chen and Hsin 2011); in post-colonial contexts such as Sin...
Ngày tải lên : 20/06/2014, 21:20
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Báo cáo toán học: "On cycles in the coprime graph of integers1" docx

Báo cáo toán học: "On cycles in the coprime graph of integers1" docx

... proof of Theorem 2. 2.2 Proof of Theorem 3 Here we assume that s 2 ≥  2 n,thecases 1 ≥  2 nis similar. Denote by P r the product of the primes not exceeding r. The rough outline of the proof will ... denote the greatest common divisor and [a, b] the least common multiple of integers a, b. Consider the coprime graph on the integers. This is the graph whose ver...
Ngày tải lên : 07/08/2014, 06:22
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Báo cáo toán học: "A Discontinuity in the Distribution of Fixed Point Sums" pps

Báo cáo toán học: "A Discontinuity in the Distribution of Fixed Point Sums" pps

... only at 0 and 1. Furthermore, if ρ =0,then φ is the characteristic function of the interval (0, 1]. (ii) Let X n be a random variable equal to the sum of the fixed points in an element of G n \D n chosen ... n} whose fixed points sum to r, shows a sharp discontinuity in the neigh- borhood of r = n. We explain this discontinuity and study the possible existence of o...
Ngày tải lên : 07/08/2014, 07:21
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Báo cáo toán học: "Hamiltonian paths in the complete graph with edge-lengths 1, 2, 3" pot

Báo cáo toán học: "Hamiltonian paths in the complete graph with edge-lengths 1, 2, 3" pot

... consequence of Lemmas 4.1, 4 .2 , 4.3, 4.4 while the second line follows fr om Lemma 4.5. Lemma 4.6 proves item (vi) of Theorem 2.1 thereby completing the proof of the whole theorem. Given the great ... 2}. The first string of +3’s must exhaust the 0-congruence class and therefore we reach up to the vertex 3k + 3. The second string of −3’s will describe another cong...
Ngày tải lên : 08/08/2014, 12:22
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Báo cáo toán học: "hree gradients in the architecture of trees." potx

Báo cáo toán học: "hree gradients in the architecture of trees." potx

... constraint in the structure of trees or indeed all higher plants. If we seek meaning in the list as a whole there remains the task of “seeing the wood for the trees”, selecting and arranging them into ... section of each type and the attachment and relaying will be terminal. If on the other hand the axis is indeterminate there will often be several sections o...
Ngày tải lên : 08/08/2014, 14:22
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Báo cáo toán học: "Unimodal rays in the regular and generalized Pascal pyramid" ppt

Báo cáo toán học: "Unimodal rays in the regular and generalized Pascal pyramid" ppt

... k 1 + ···+ k m = n. In order to prepare the proof of Theorem 5, let introduce the notation of rays in generalized Pascal pyramids. As usual, a lattice ray in the domain D p of the function p is ... his/her helpful comments. the electronic journal of combinatorics 18 (2011), #P79 8 2 Results and proofs Using the notation above, the principal result of this work...
Ngày tải lên : 08/08/2014, 14:23
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