Báo cáo toán học: "On the Proof of a Theorem of P´lfy a" doc

... journal of combinatorics 13 (2006), #N16 2 On the Proof of a Theorem of P´alfy Edward Dobson Department of Mathematics and Statistics Mississippi State University PO Drawer MA Mississippi State, ... = 1, then y is conjugate to x in x, y. Proof. As x and y are abelian, and a transitive abelian subgroup is regular [3, Theorem 4. 2A (v)], we have that fix x (B) a...

Ngày tải lên: 07/08/2014, 13:21

... characteristic and of the cardinal of K, and even in the case I L is not radical. In fact, if char(K)=2,then √ I L = I L sat , where the latter one is the lattice ideal associated to the saturated ... are generated by 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 indep...

Ngày tải lên: 06/08/2014, 05:20

... structure of a SOMA Let A be a SOMA(k, n). A subset B of A is called a subSOMA of A if and only if B is itself a SOMA. If B is a subSOMA of A then B is necessarily a SOMA(k  ,n)with 0≤k  ≤n,andwecallBasubSOMA(k  ,n)ofA. ... loss of generality, we may suppose that A 1 , ,A m are distinct, and each of A 1 , ,A m−1 is a SOMA(1,n)oraSOMA(2,n). Applying...

Ngày tải lên: 07/08/2014, 06:20

... 4: The matroids N 11 ,N 23 by Dharmatilake, in binary representations. Since the matroids of all these four graphs have branch-width greater than 3, the theorem gives the graphic (and cographic ... is k-separating if λ M (A) ≤ k. When equality holds here, A is said to be exactly k-separating. A partition (A, E A) is called a k-separation if A is k-separating and both |A|...

Ngày tải lên: 07/08/2014, 06:23

... abcacbacabacbcabacabcacbcabacbcacba (# a = 13, # b = 10, # c = 12) , w 2 = abcacbcabacbabcbacabcbabcabacbcacba (# a = 12, # b = 12, # c = 11) , w 3 = abcacbacabacbcabacabcbabcabacbcacba (# a = 13, # b = ... A n ,wehave A 0 = {λ}, A 1 = {a, b, c}, A 2 = {ab, ac, ba, bc, ca, cb}, A 3 = {aba, abc, aca, acb, bab, bac, bca, bcb, cab, cac, cba, cbc}, (1) and so on, with A ∗ =  n≥...

Ngày tải lên: 07/08/2014, 08:20

... obviously a bijection and it leaves invariant all the rows except the last one and the extra one because it is applied at the top of the diagrams as can be seen on figure 10. An important remark is that ... that it is invariant by reversal of all arrows and that it satisfies the ice rule i.e. there are as many outgoing arrows as incoming arrows. Since the Yang–Baxter equatio...

Ngày tải lên: 07/08/2014, 21:20

... temporal behavior of the instantaneous channel capacity can be studied with the help of the LCR and ADF of the channel capacity. The LCR of the instantaneous channel capacity describes the average rate ... properties of the instantaneous capacity c of N∗Nakagami-m channels are analyzed. For example, we have derived exact analytical expressions for the PDF, CDF, L...

Ngày tải lên: 20/06/2014, 20:20

... nonlinear discrete Volterra difference equations Istv´an Gy˝ori ∗1 and Essam Awwad 1,2 1 Department of Mathematics, Faculty of Information Technology, University of Pannonia, Hungary 2 Department of ... interests The authors declare that they have no competing interests. Authors’ contributions This was a joint work in every aspect. All the authors have read and approved the fina...

Ngày tải lên: 20/06/2014, 20:20

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Ngày tải lên: 05/08/2014, 09:46

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Ngày tải lên: 05/08/2014, 09:46