Lie Symmetry Analysis of the Inhomogeneous Toda Lattice Equation via Semi-Discrete Exterior Calculus

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（6）
• 页码范围: 643-647
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0253-6102/67/6/643

摘要

In this work,the Lie point symmetries of the inhomogeneous Toda lattice equation are obtained by semi-discrete exterior calculus,which is a semi-discrete version of Harrison and Estabrook's geometric approach.A four-dimensional Lie algebra and its one-,two-and three-dimensional subalgebras are given.Two similarity reductions of the inhomogeneous Toda lattice equation are obtained by using the symmetry vectors.