Báo cáo toán học: "Automorphisms and enumeration of switching classes of tournaments" doc

... number of switching classes it fixes is equal to the number of elements of B that it fixes. This number is easily computed, and in any case is known from the enumeration of switching classes of graphs by ... number of switching classes of tournaments is smaller than the number of switching classes of graphs if n ≥ 3. For the formula is a sum of some of...

Ngày tải lên: 07/08/2014, 06:20

... precipitated was filtered, dried, and recrystallized from a mixture of ethanol and water. The compounds obtained 5a–k and 6a–c were reacted with 10 mL NaOH (20%) and 10 mL of ethanol under reflux for ... with diluted hydrochloric acid (1:3), and the precipitate was filtered and recrystallized from DMF and water. A mixture of the acids 3a–k and 4a–c (1 mmol), and p...

Ngày tải lên: 20/06/2014, 20:20

Ngày tải lên: 05/08/2014, 15:20

... of Theorem 3 To simplify and avoid proliferation of cases, we take t = 2 and accuracy n −2 ;themethod can be adapted for any fixed t ≥ 2, and any desired accuracy. It is an iterative method, and ... replacement of n by n − 1andofr by r − r/(1 + r)n +O(n −2 ), is the formula stated as Theorem 3. the electronic journal of combinatorics 8 (2001), #R15 6 Meet and Join within the...

Ngày tải lên: 07/08/2014, 06:22

... 1,n j − 2,m j is a 2-fan of type 1, where n j =2a 2 j +1 and m j = a 2 j (a 2 j − 1).  the electronic journal of combinatorics 11 (2004), #R6 4 Proof. Let  ∈ N be given and let b ∈ N be any odd ... the help of Prolog. Proposition 4.1. χ  G × +  ≥ 4. Proof. Let G 10 be the subgraph of G × + induced by the 10 vertices 6, 7, 8, 9, 12, 13, 14, 15, 20, and 36: the electronic jour...

Ngày tải lên: 07/08/2014, 08:20

... implementation and test of the new MAC and baseband processors of the RF-MIMO WLAN. These processors fulfil all the requirements of the new AFE that exploits the available spatial diversity of the IEEE802.11a ... given number of clock cycles and go to idle state. 4. Baseband architecture The architecture of the baseband processor is shown in Figure 6. It is composed of two...

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 05/08/2014, 15:21

... norm of the resulting beam deflection cannot be too large compared to that of the input loading w. Meanwhile, the nonlinearity and the non-uniformity of the system suggest that the norm of the ... subspace, we then prove the existence and the uniqueness of the deflection of an infinite b eam resting on a both non-uniform and nonlinear elastic foundation by means of Banach fixe...

Ngày tải lên: 20/06/2014, 20:20

... absorbers hav ing energy band gaps in the range of 1.3 to 1.5 eV compared with CdS and having a wider energy band gap compared with CdS, which trans- mits even higher energy photons and increases the ... National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2010-0024830). Author details 1 School of Materials Science and Engine...

Ngày tải lên: 20/06/2014, 21:20

... study and participated in its design and coordination. CY participated in the revision of the manuscript. LPS and YW participated in the preparation of the TiO 2 /ZrO 2 bilayer thin film. JQZ and ... full incorporation of the TiO 2 and ZrO 2 film, as shown in TEM. Figure 2 High-resolution cross-sectional TEM images of the interface between the composite thin films and Si.(...

Ngày tải lên: 20/06/2014, 21:20