Báo cáo toán học: "Characterizations of Transversal and Fundamental Transversal Matroids" doc

... fundamen- tal transversal matroids, for cotransversal matroids, and for matroids that are both transversal and cotransversal. Proof. The proof of each part uses one of Theorems 3.2 and 4.1 along ... and property (3), so M is transversal by Theorem 3.2. ✷ 4 Characterizations of Fundamental Transversal Matroids In this section, we treat counterparts, for fundamental t...

Ngày tải lên: 08/08/2014, 14:23

... 57. Middelhoff U, Reuter H, Breckling B: GeneTraMP, a spatio-temporal model of the dispersal and persistence of transgenes in feral, volunteer and crop plants of oilseed rape and related species. ... the introduction of Bt maize. Figure 1 depicts the distribution of the corn borer in the federal state of Brandenburg for the years 2005, 2006 and 2007. Some of the d...

Ngày tải lên: 20/06/2014, 20:20

... the proof of Theorem 1.1 is complete, and with this result at hand, we may now prove Theorem 1.2 and Theorem 1.5. Proof of Theorem 1.2. First, take a non-linear irreducible character χ of S n ;thus, χ ... 2 and four cases where it ends on 3, namely for 10, 50, 100 and 15.856.204. 4 Proofs of the main results We first give the proof of Theorem 1.1. Let λ =(λ 1 ,λ 2 , ,λ l ) be...

Ngày tải lên: 07/08/2014, 08:22

... r α⊙β and r 2m = r 1 . . . 1  2m , m  1. We devote the next subsection to the proof of this theorem. 3.3 Equivalence of relations We say that the set of relationships A implies the set of relationships ... focus of our results, and hence we now establish some of its basic properties. the electronic journal of combinatorics 16 (2009), #R110 5 2.2 Preliminary pr operties...

Ngày tải lên: 08/08/2014, 01:20

... leaves and a subset of permutations of the set {2, ¯ 2, 3, ¯ 3, . . . , n, ¯n}. This string of symbols is called the name of a cladogram. Deletion of the leaf labeled n corresponds to deletion of ... Tinhofer. Landscapes on spaces of trees. Journal of Applied Mathematics and Computation, 131(2–3):439– 459, September 2002. [3] Louis J. Billera, Susan P. Holmes, and Karen...

Ngày tải lên: 08/08/2014, 12:22

... 18. [16] V. Leoreanu-Fot ea and B. Davvaz, Join n-spaces and lattices, Journal of Multiple- Valued Logic and Soft Computing, 15 (2009), 421–432. [17] V. Leoreanu-Fotea and I.G. Rosenberg, Hypergroupoids ... ies of the hypergroups defined by J.C. Varlet [24] and S. Comer [3] that called here Varlet hypergroups and Comer hypergroups, respectively. Using the results of [1, 22] t...

Ngày tải lên: 08/08/2014, 14:23

... 122 expression of EphA2 and EphrinA-1 in a series of 217 early squamous cell cervical carcinomas and to identify predictive markers of the clinical outcome for these patients. Materials and methods ... EphA2 and EphrinA-1 was present in 40% and 60% of normal squamous epithelium, respectively. The positive overall staining (weak/moderate/strong) of EphA2 and Ephr...

Ngày tải lên: 08/08/2014, 17:20

... of 22 scans (86%) according to the AIC with a mean value of −98 ± 13. The 1T2k 60 and 2T4k models provided best fits in 1 (5%) and 2 (9%) out of 22 scans with mean AIC values of −81 ± 13 and ... radiochemistry and technology staff of the Department of Nuclear Medicine & PET Research for the tracer production and acquisition of PET data, respectively. In additio...

Ngày tải lên: 20/06/2014, 20:20

Ngày tải lên: 05/08/2014, 15:20