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Date | Apr 21, 2023 |
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Speaker | 김대준 |

Dept. | 고등과학원 |

Room | 27-325 |

Time | 18:00-20:00 |

Lifting problem for universal quadratic forms asks for totally real number fields K which admits a positive definite quadratic form with rational integer coefficients that is universal over the ring of integers of K. In this talk, we show that there is only one such totally real cubic field. Moreover, we show that there is no such biquadratic field. This is a joint work with Seokhyoung Lee.

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