Date | 2022-01-18 |
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Speaker | 김찬우 |

Dept. | University of Wisconsin-Madison |

Room | 129-301 |

Time | 10:00-15:30 |

We talk about a convergence of kinetic vorticity of Boltzmann toward the vorticity of incompressible Euler in 2D. When the Euler vorticity is below Yudovich, we prove a weak convergence toward Lagrangian solutions, while for the Yudovich class we have a strong convergence toward a unique solution with a rate. The talk would be self-contained covering necessary background in basic Boltzmann theory, asymptotic expansion (Hilbert expansion), and Lagrangian solutions of Euler.

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