Báo cáo toán học: "Convex-Ear Decompositions and the Flag h-Vector" docx

... closed, and convex subsets of the bounded and convex set coC, then µ(C n ) = 0 (n ∈ N), and therefore C ∞ = ∅. Appealing again to the ˇ Smulian theorem [6, Theorem V.6.2] we find that the convex ... denotes the closed and convex hull of A and H(C, D) is the Hausdorff-Pompeiu distance between the bounded subsets C and D of X. The E-L measure of nonconvexity was introdu...

Ngày tải lên: 20/06/2014, 20:20

... are preserved through the mapping, the stable region always lies to the left of the contour. In the v- plane, this is the region above the top horizontal line, and below the lower h orizontal 0 ... Cleveland, OH 44135, USA Authors’ contributions TH and CL worked together in the derivation of the mathematical results. Both authors read and approved the final manuscr...

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 05/08/2014, 10:20

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:20

... Find whether G 1 and G 2 have orthogonal Euler tours. If G 1 and G 2 are equal to the graph G of Problem 1.7 and each directed transition of G has the same colour in G 1 and G 2 , then T 1 and T 2 are ... 2-matroids Let Q 1 and Q 2 be 2-matroids. When Q 1 and Q 2 have the same ground-set and skew classes we shall use Q 1 + Q 2 to denote the parity system which is the...

Ngày tải lên: 07/08/2014, 06:20

... asymptotic formula for f nk from theorem 1.1, together with standard results from random matrix theory relating the behavior of the eigenvalues of random unitary matrices to the behavior of the eigenvalues of ... D 1 be the following operation on tableaux: delete the top-left element of the tableaux, then move the lesser of the element immediately below and the element i...

Ngày tải lên: 07/08/2014, 06:22

... nonnegativity and the Bruhat order Brian Drake, Sean Gerrish, Mark Skandera Dept. of Mathematics, Brandeis University MS 050, P.O. Box 9110, Waltham, MA 02454 bdrake@math.brandeis.edu Dept. of Mathematics, ... that the coefficient of m 1 s in the monomial expansion of h λ − h µ is negative. the electronic journal of combinatorics 11(2) (2005), #R18 3 Note that the ratio of the coe...

Ngày tải lên: 07/08/2014, 08:22

... Huczynska ∗ and Vincent Vatter † School of Mathematics and Statistics University of St Andrews St Andrews, Fife, Scotland {sophieh, vince}@mcs.st -and. ac.uk http://turnbull.mcs.st -and. ac.uk/~{sophieh, ... gridding of the skew-merged permutation 917456328. and this (increasing) subsequence gives the points in the lower left-hand box of Figure 3. The increasing subsequence in...

Ngày tải lên: 07/08/2014, 13:21