The project supported by the Natural Science Foundation of Zhejiang Province under Grant No. Y606128, the Natural Science Foundation of Zhejiang Lishui University under Grant No. KZ08001, and the Scie
<正> A semi-direct sum of two Lie algebras of four-by-four matrices is presented,and a discrete four-by-fourmatrix spectral problem is introduced.A hierarchy of
<正> Synchronization in coupled oscillator networks has attracted much attention from many fields of scienceand engineering.In this paper,it is firstly proved t
<正> In order to describe the self-organization of communities in the evolution of weighted networks,we propose anew evolving model for weighted community-struc
<正> We investigate the decomposition of noncommutative gauge potential _i,and find that it has innerstructure,namely,_i can be decomposed in two parts,_i and _
<正> In terms of the solutions of the generalized Riccati equation,a new algebraic method,which contains theterms of radical expression of functions f(ξ),is co