The project supported by National Natural Science Foundation of China under Grant No. 10674025 and the Fund of Education Department of Fujian Province under Grant No. JB06043
<正> Based on an iterative method for solving the groundstate of Schrdinger equation,it is found that a kind ofgeneralized Sombrero-shaped potentials in N-dimen
<正>Current universe (assumed here to be normal matter on the brane) is pressureless from observations.In this case the energy condition is ρ_0≥0 and p0=0.By
<正> A new kind of weak Noether symmetry for a general holonomic system is defined in such a way that themethods to construct Hojman conserved quantity and new-