Báo cáo toán học: "rees and Matchings" ppt

... generate random matchings rather than merely count them, then, given a random bit, a random matching in the before graph is readily transformed into a random matching in the after graph, and conversely, ... v 1 and v 2 of G are connected by an edge, and that f is a face bounded by this edge. The height difference between the diagonal from v 1 to f and the diagonal from v 2 to f is dete...

Ngày tải lên: 07/08/2014, 06:20

... supported, and it is 21 We have a few assumptions on f(u, x) and w(x). There are four assumptions F1, F2, F3, F4 on f, and two W1, W2 on w. As one can find out soon, they are general enough, and have ... right-continuous, and thus, is continuous. By (11) and (14), we have ηk ≤ f u (0, x) ≤ k, and so −(1 −η) k ≤ f u (0, x) −k ≤ 0 for every 10 Figure 1: Infinite beam on nonlinear a...

Ngày tải lên: 20/06/2014, 20:20

... Remark 2, the lower solution α and the upper solution β satisfy, respectively, inequalities (7) and (8) and, conversely, if α and β satisfy (7) and (8) then they are lower and upper solutions in the ... ∈ I − and β  (t) = m ≥ max y ≤max I β(t) f(y) for all t ∈ I 0 . (25) So we deduce from (24) and (25) that α and β are lower and upper solutions for problem (13).  16 Rub´...

Ngày tải lên: 20/06/2014, 20:20

... subbands of uniform bandwidth by two level wavelet packet transform. Then, the prediction coefficients were estimated from the subbands of uniform decomposition similar to first type and were ... considered the 21 coefficients in LPCC and MFCC feature vectors (7 LPC/MFCC coefficients and their first and second derivatives). The performances of LPCC, MFCC, and WLPC (UWLPC/ DWLP...

Ngày tải lên: 20/06/2014, 20:20

... signal x with a random waveform and randomly under-sample the result in time-domain. The random convolution is performed through a random pre-modulation in the Fourier domain and the signal thus ... value. 16 Universal and efficient compressed sensing by spread spec- trum and application to realistic Fourier imaging techniques Gilles Puy ∗1,2 , Pierre Vandergheynst 1 , R´emi Gribonval 3...

Ngày tải lên: 20/06/2014, 20:20

... (f 1 ) and (f 5 ) we have|Φ(u)| ≤ C 2 u β 3 r 1− , and in the similar way from(g 1 ) and (g 5 ) we have |Ψ(u)| ≤ C 2 u r 2− . Thus by (H 4 ), we conclude that there exist positive constants ρ and ... assume M ε > C 1 µ and M  ε > C 2 θµ . Note that in this case the inequalities  Ω F (x, u)dx ≥ M ε and  ∂Ω G(x, u)dσ ≥ M  ε are equivalent to    Ω F (x, u)dx   ≥ M...

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 05/08/2014, 10:20

Ngày tải lên: 05/08/2014, 15:20

... theorem as follows: For posets X and Y , OT (X) ∼ = OT (Y ) if and only if X and Y are order- isomorphic or anti- order-isomorphic. Let Z and R denote the set of integers and the set of real numbers, ... θ −1 θβ = β. Also, for γ ∈ OT (X )and ∈ OT (Y ), we have γθ −1 ,θ −1 λ ∈ OT(X, Y )and (γθ −1 )θ = γ and θ(θ −1 λ)=λ. Hence (i) and (ii) are proved.  3. Regularity and Isomor...

Ngày tải lên: 06/08/2014, 05:20

... if and only if it holds for ˜ H t . Let v and e (˜v and ˜e) be the number of vertices and edges of H (and ˜ H t ), respectively. Clearly, ˜v = v + t and ˜e = e +  t 2  + vt.If ˜ H t triangulates ... (P q )= GF (q) and two distinct vertices x, y are adjacent if and only if x − y = z 2 for some z ∈ GF(q). Since p ≡ 1(mod4),x − y is a square if and only if y − x is a square,...

Ngày tải lên: 07/08/2014, 08:22