<正> Mei symmetry and Mei conserved quantity for a non-holonomic system of non-Chetaev's type with unilateralconstraints in the Nielsen style are studied.Th
<正> Based on the transverse Ising model and using decoupling approximation to the Fermi-type Green'sfunction, we study the phase transition properties of t
<正> Considering full perturbation to infinitesimal generators in the Mei structure equation,a new type of Meiadiabatic invariant induced by perturbation to Mei