Báo cáo toán học: "Frequency squares and affine designs" pdf

... equality if and only if D ∗ is also affine. When D,D ∗ are both affine then b = v = µm 2 and r = k = µm and D is called a symmetric (µ, m)-net. Note that transversal designs are just the duals of affine designs. An ... latin squares and affine planes, J. Comb. Theory A, 61 (1992), 13-35. [9] C F Laywine, G L Mullen: Discrete Mathematics Using Latin Squares (Wiley, 1998). [10] V C M...

Ngày tải lên: 07/08/2014, 06:22

... the standard discriminant that have no root in the first s integers. 1 Introduction In this paper we study the arrangement A col,s n of all affine hyperplanes H ij : z i = z j , 1 ≤ i<j≤n,andH r i :z i =r,1≤i≤nand ... to the affine subspace V (τ,(l 1 , ,l t )) that is defined by the electronic journal of combinatorics 4 (1997), #R4 12 [5] P. Edelman and V. Reiner, Free hyperplane arrangeme...

Ngày tải lên: 07/08/2014, 06:20

... (4.19) vanishes if and only if i ≤ 2v − m and i + j>2v−m. (4.27) The second term in (4.19) vanishes if and only if  v − 1 2  ≤ i ≤ v + j − 2 2 . (4.28) The third term in (4.19) vanishes if and only ... determinant evaluation in Theorem 10 (and also of its q-analogue in [9]), and could also be used to give an inductive proof of the determinant evaluation in Theorem 8 (and its...

Ngày tải lên: 07/08/2014, 06:20

... shuffle of u and v if w has length r + s and if u and v are both subsequences of w. The shuffle product u ∃ v of u and v is an element of KX and is defined to be the sum of all the shuffles of u and v. ... Sakarovitch and Imre Simon, With a foreword by Roger Lyndon, Edited and with a preface by Perrin. [14] Claudia Malvenuto and Christophe Reutenauer. Duality between quasi-symmet...

Ngày tải lên: 07/08/2014, 08:22

Ngày tải lên: 05/08/2014, 09:46

... Kinderlehrer and G. Stampacchia, An Introduction to Variational Inequalities and Their Applications, Academic Press, New York, 1980. 10. G. M. Lee, N. N. Tam, and N. D. Yen, Quadratic Programming and Affine ... S. Gowda and J. -S. Pang, On the boundedness and stability of solutions to the affine variational inequality problem, SIAM J. Control Optim. 32 (1994) 421–441. 5. T. N. Hoa...

Ngày tải lên: 06/08/2014, 05:20

... G[X] and G[X] are critical, 2-connected and non-bipartite, and that |F ∩ EG[X]| ≡ |X| − 1 2 (mod 2) for all 1-factors F . Then the unique brick resulting from the decomposition of G into bricks and ... passes through x. Let e and f be the edges of C incident on x. Let u and v, respectively, be the ends of these edges in X. Let M e and M f be perfect matchings of G containing e...

Ngày tải lên: 07/08/2014, 15:22

... and geometry. II, 537–615, Springer, Berlin, 2007. [2] Connes, A. and Kreimer, D., Hopf algebras, renormalization, and noncommutative geometry. Comm. Math. Phys. 199 203-242 (1998). [3] Gelfand ... F 2 the disjoint union of the rooted for ests F 1 and F 2 labeled by S, and refer to this as the direct sum. 3. Every morphism possesses a kernel and a cokernel. 4. For every admissible...

Ngày tải lên: 08/08/2014, 11:20

... Diet, Physical Activity and Health [4], the Global Strategy to Reduce the Harmfu l Use of Alcohol [5], and the 2008-2013 Action Plan for the Global Strategy for the Prevention and Control of Non-Communicable ... from the emergency medical and surgical community. Advocacy efforts on the part of emergency clinicians should be increased to highlight the critical services we provide and...

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