THE SOLITON SOLUTIONS OF KdV EQUATION RUNNING TO THE LEFT AND THEIR INTERACTIONS
KdV方程的左行孤子解及其相互作用

We point out that there exist the soliton solutions of the KdV equation running to the left, as well as static and the interaction solutions between left running and right running solitons. The larger the amplitude of the left running soliton is, the slower it moves.