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Vacuum and singularity formation for compressible Euler equations with time-dependent damping

  • *Corresponding author: Huimin Yu

    *Corresponding author: Huimin Yu

The last author is supported by [NSFC Grant No. 12271310 and Natural Science Foundation of Shandong Province ZR2022MA088.].

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  • In this paper, vacuum and singularity formation are considered for compressible Euler equations with time-dependent damping. For $ 1<\gamma{\leq} 3 $, by constructing some new control functions ingeniously, we obtain the lower bounds estimates on density for arbitrary classical solutions. Basing on these lower estimates, we succeed in proving the singular formation theorem for all $ \lambda $, which was open in [19] for some cases. Moreover, the singularity formation of the compressible Euler equations when $ \gamma = 3 $ is investigated, too.

    Mathematics Subject Classification: Primary: 35Q31, 76N10; Secondary: 76L05.

    Citation:

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