Báo cáo toán học: "The Gr¨tzsch Theorem for the hypergraph of o maximal cliques" pdf

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:20

... 2-choosable? By Theorem 2.5, H(G) (from the above problem) is 2-colorable. This the- orem relies on the 4-Color Theorem. So, it would be an interesting problem to find a direct proof of Theorem ... proof of Lemma 2.3 (by possibly permuting the colors) so that the corresponding strong 3-coloring of H(G)is an extension of c. This completes the proof. Theorem 2.6 The...

Ngày tải lên: 07/08/2014, 06:20

... ajectory attractors for 3D non- autonomous incompressible Navier-Stokes system which is based on the works of Leray and Hopf. Using the weak convergence topology of the space H (see below for the ... to obtain the existence of the uniform attractor of the 3D non-autonomous NSV equations. Main difficulties we encountered are as follows: (1) how to obtain a contractive...

Ngày tải lên: 20/06/2014, 21:20

... notice below). For information about publishing your research in Boundary Value Problems go to http://www.boundaryvalueproblems.com/authors/instructions/ For information about other SpringerOpen ... and the H 2 -theory of the Stokes system, we arrive at u L ∞ (0,T ;H 2 ) ≤ C. This completes the proof.  Competing interests The authors declare that they have no competing intere...

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 05/08/2014, 10:20

Ngày tải lên: 05/08/2014, 15:20

... min), so T has a fixed point and the set FixT of fixed points of T is convex and the theorem follows. Acknowledgements. The author would like to take this opp ortunity to thank Prof. Do Hong Tan for ... desired. The proof is complete. Now we state an analogous result to Theorem 1 for probabilistic normed spaces. Theorem 2. Let C be a nonempty weakly compact convex set havi...

Ngày tải lên: 06/08/2014, 05:20

... general theory of representations of finite semigroups. The representa- tion theory of the rook monoid is particularly interesting because of its similarity to the representation theory of the symmetric ... a combinatorial construction of the irreducible representations of the rook monoid. Since the rook monoid contains the symmetric group, it is perhaps not surpr...

Ngày tải lên: 07/08/2014, 06:23

... different; our result extends Sperner’s Theorem from sets to set-partitions. A related extension of the Erd˝os-Ko-Rado Theorem to set partitions is found in [12]. Bollob´as [2] gives a generalization of ... Statistics University of Ottawa, Ottawa, Ontario, Canada kmeagher@site.uottawa.ca Lucia Moura School of Information Technology and Engineering University of Ottawa, Ottawa,...

Ngày tải lên: 07/08/2014, 08:22