Abstract: Some recent developments in the study of the Cauchy problem for the Euler equations for compressible fluids are reviewed. The local and global well-posedness for smooth solutions is presented, and the formation of singularity is exhibited; then the local and global well-posedness for discontinuous solutions, including the BV theory and the $L^\infty$ theory, is extensively discussed. Some recent developments in the study of the Euler equations with source terms are also reviewed.
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