[in Chinese], [in Chinese]. Equivalence transformation for the Camassa-Holm equation[J]. Chinese Journal of Quantum Electronics, 2009, 26(6): 654
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A simple improved direct method is presented to find equivalence transformation for a class of Camassa-Holm equation. Applying this equivalence transformation, the theorem of symmetry group for the Camassa-Holm equation is obtained, which describes the relationship between the new solutions and the old ones. Some new exact and explicit solutions of the Camassa-Holm equation are obtained by the present references.