报告题目：Superposition formulae and integrable discretization of KdV-type soliton equations 

　　报 告 人：张英楠   副教授 南京师范大学 

　　时    间：2019年8月6日（周二）15:00—16:00 

　　地    点：新波谱楼12楼1217报告厅 

Abstract 

　　In this talk, I will talk about the procedure to discretize soliton equations via the superposition formulaes. As well-known, Backlund transformation is used to construct integrable difference equations. However, Backlund transformation only connects two solutions of a soliton equation and the result equations are not suitable to construct the numerical simulation algrithms. The superposition formulae is a relation among 4 solutions and can give a way to build local integrable difference equations. 　　  

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