1. Department of Physics, Shanghai Jiao Tong University,Shanghai 200030, China;2. Department of Physics, Shaoxing College of Arts andSciences, Shaoxing 312000, China;3. Department of Physics, Ningbo University, Ningbo 315211, China
Abstract:
By means of a simple ideal, which is firstly proposed for thecontinuous system, we present an arbitrary order classical Todafamily invariant under common Virasoro-type symmetryalgebra.