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Date | Jun 23, 2023 |
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Speaker | 김경민 |

Dept. | 한남대학교 |

Room | 27-325 |

Time | 19:00~21:00 |

Let f be a positive definite integral quinary quadratic form. We say f is strongly s-regular if it satisfies a strong regularity property on the number of representations of squares of integers by f. In this talk, we show that there exist exactly 19 strongly s-regular diagonal quinary quadratic forms representing 1. In particular, we prove the strongly s-regularity of the quinary quadratic form x² + 2y² + 2z² + 3w² + 3t², which is, in fact, of class number 4.

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