北大藏秦代简牍涉及诸多领域,内涵丰富,其关于数学类文献的内容,有学者做过梳理和解读~([1])。《鲁久次问数于陈起》,以鲁久次与陈起回答的形式,论述了数学的作用和意义。在这篇文献中,陈起提出了一种三方三圆的宇宙模型,不见于传世及其他出土文献。目前对于这篇文献的释读与研究,基本上 The Northern Dynasties and the Qin Dynasties are involved in many areas, with rich connotations. Some scholars have done some sorts and interpretations on the contents of the maths classics ([1]). “Lu Qiu times in the number of questions from Chen,” Luji times and Chen Qi answer the form, discusses the role and significance of mathematics. In this paper, Chen Qi proposed a three-party and three-circle cosmic model that is not found in handed down and other unearthed documents. At present, the interpretation and research of this document is basically