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»ã±¨ÌáÒª£ºThe initial value problem for the Sasa¨CSatsuma equation is transformed to a 3¡Á3 matrix Riemann¨CHilbert problem with the help of the corresponding Lax pair. Two distinct factorizations of the jump matrix and a decomposition of the vector-valued function are given, from which the long-time asymptotics for the Sasa¨CSatsuma equation with decaying initial data is obtained by using the nonlinear steepest descent method.

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