<正> Properties of the four rotation bands,(157)~Er(1,2)and(158)~Er(1,2),at ultrahigh spin are investigated withinthe supersymmetry scheme including many-body i
<正> The generalized algebraic method with symbolic computation is extended to some special-type nonlinearequations for constructing a series of new and more ge
【正】 Two types of Lie algebras are presented,from which two integrable couplings associated with the Tuisospectral problem are obtained,respectively.One of th