Báo cáo toán học: "A cohomological characterization of finite-dimensional C*-algebras " docx

... A Descriptive Characterization of Tree-Adjoining Languages (Project Note) James Rogers Dept. of Computer Science Univ. of Central Florida, Orlando, FL, USA ... et al., 1997). The scope of each of these applications is limited, to some extent, by the fact that there are no such descriptive characterizations of classes of languages beyond the context-free. .....

Ngày tải lên: 23/03/2014, 19:20

... doi:10.1186/2190-8567-2-1 Oscar Benjamin (oscar.benjamin@bristol.ac.uk) Thomas H.B. Fitzgerald (thbfitz@gmail.com) Peter Ashwin (p.ashwin@exeter.ac.uk) Krasimira Tsaneva-Atanasova (k.tsaneva-atanasova@bristol.ac.uk) Fahmida ... net- work structure may explain seizure frequency in idiopathic generalised epilepsy Oscar Benjamin 1 , Thomas H. B. Fitzgerald 2 , Peter Ashwin 3 , Kr...

Ngày tải lên: 20/06/2014, 20:20

... Synthesis and characterization of CuO nanowires by a simple wet chemical method Anita Sagadevan Ethiraj 1 and Dae Joon Kang* 1 1 BK21 Physics Research Division, Department of Energy ... Fully formatted PDF and full text (HTML) versions will be made available soon. Synthesis and characterization of CuO nanowires by a simple wet chemica...

Ngày tải lên: 20/06/2014, 21:20

... increasing amount of medical images. As a result, reliable automatic methods for image segmenta- tion are necessary. It cannot be said that there is a segmentation method for medical images that produces ... representing individual anatomical objects. This task plays a vital role in many biomedical imaging applications: the quantifica- tion of tissue volumes, diagnosis,...

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 05/08/2014, 09:46

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Ngày tải lên: 05/08/2014, 15:20

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Ngày tải lên: 05/08/2014, 15:20

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Ngày tải lên: 05/08/2014, 15:21

... properties of the generating function of polynomials of binomial type and by Grabiner [186, 187] to extend the umbral calculus to certain classes of entire functions. Applications of umbral calculus ... D.E. Loeb. A selected survey of umbral calculus. Elec. J. Combin., 3:Dynamical Surveys Section, 1995. URL of European mirror site: http://www.zblmath.fiz-karlsruhe.de/e...

Ngày tải lên: 07/08/2014, 05:23

... gain graph Φ (i.e., with gains in GF(3) + ) based on K n . A theory of switching classes and triple covering graphs, analogous to that of signed complete graphs (and of two -graphs) is developed. ... orientation embedding (called signed embedding” [although there are other kinds of signed embedding]) and switching (called “sequence of local switches of sense”) of...

Ngày tải lên: 07/08/2014, 05:23

... second coordinate (i.e., the number of ways of “placing k non-taking rooks on B”). It has long been known [5] that the rook numbers of a board B determine the rook numbers of the complementary board ... subset of [d] ì [d](where[d]isdenedtobe{1, 2, ,d})andtherook numbers r B k of a board are the number of subsets of B of size k such that no two elements have t...

Ngày tải lên: 07/08/2014, 06:20

... bijective proof for this recurrence in terms of the area of Schrăoder paths. In 1976 Kreweras [7] proved that the sum of the areas of the regions lying under the elevated Schrăoder paths satisfies ... satisfies the recurrence relation and then establishing a bijection between the set of these paths and the set of triangles constituting the total area of...

Ngày tải lên: 07/08/2014, 06:20

... {i}.(Ingeneral, if f is a function and A is a set, then by f A we mean the image of A under f.That is, f A = {f (a) | a ∈ A} .) The failure of a partition relation is indicated by replacing the ... be), if an order does not have countable character, then it must have uncountable character. 1 We remark that an order X has countable character if and only if the negative...

Ngày tải lên: 07/08/2014, 06:20

... E. R. van Dam and W. H. Haemers, Eigenvalues and the diameter of graphs, Linear and Multilinear Algebra 39 (1995), 33–44. [8] E. R. van Dam and W. H. Haemers, A characterization of distance-regular ... study two spectral characterizations of antipodal distance-regular graphs. The fist one establishes that the distance-regular graphs which are antipodal the electronic journal...

Ngày tải lên: 07/08/2014, 06:22