The Darboux transformations for soliton equations are applied to the Yang-Mills-Higgs equations.New solutions can be obtained from a known one via universal and
We consider a variation of a classical Turán-type extremal problem as follows: Determine the smallest even integer σ(Kr,r, n) such that every n-term graphic s
The dielectric properties of Pb(Zn1/3Nb2/3)O3BaTiO3-PbTiO3 relaxor ferroelectric ceramics near the rhombohedral and tetragonal phase boundary were investigated