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math.RT2012★ 2 cited
Classification of quasifinite representations of a Lie algebra related to Block type
Yucai Su, Chunguang Xia, Ying Xu
A well-known theorem of Mathieu's states that a Harish-chandra module over the Virasoro algebra is either a highest weight module, a lowest weight module or a module of the interme…
math-ph2012★ 58 cited
Block type symmetry of bigraded Toda Hierarchy
Chuanzhong Li, Jingsong He, Yucai Su
In this paper, we define Orlov-Schulman's operators , , and then use them to construct the additional symmetries of the bigraded Toda hierarchy (BTH). We further show tha…