  The uniqueness of entropy solution for the compressible Euler equations is a
fundamental and challenging problem. In this paper, the uniqueness of a
composite wave of shock and rarefaction of 1-d compressible Euler equations is
proved in the inviscid limit of compressible Navier-Stokes equations. Moreover,
the relative entropy around the original Riemann solution consisting of shock
and rarefaction under the large perturbation is shown to be uniformly bounded
by the framework developed in \cite{Kang-Vasseur-2021-Invent}. The proof
contains two new ingredients: 1) a cut-off technique and the expanding property
of rarefaction are used to overcome the errors generated by the viscosity
related to inviscid rarefaction; 2) the error terms concerning the interactions
between shock and rarefaction are controlled by the compressibility of shock,
the decay of derivative of rarefaction and the separation of shock and
rarefaction as time increases.
