Lagrangian Multiforms for Kadomtsev–Petviashvili (KP) and the Gelfand–Dickey Hierarchy
Lagrangian Multiforms for Kadomtsev–Petviashvili (KP) and the Gelfand–Dickey Hierarchy
复制标题
Kadomtsev-Petviashvili (KP) 和 Gelfand-Dickey 层次结构的拉格朗日多重形式
DOI:
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发表时间:
2020
影响因子:
1
通讯作者:
V. Caudrelier
中科院分区:
文献类型:
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作者:
D. Sleigh;F. Nijhoff;V. Caudrelier
We present, for the first time, a Lagrangian multiform for the complete Kadomtsev–Petviashvili hierarchy—a single variational object that generates the whole hierarchy and encapsulates its integrability. By performing a reduction on this Lagrangian multiform, we also obtain Lagrangian multiforms for the Gelfand–Dickey hierarchy of hierarchies, comprising, among others, the Korteweg–de Vries and Boussinesq hierarchies.