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公元前2200年前,我国战国时人李悝(kui)在算账时曾出现了这样的记录:“衣:五人终岁用千五百,不足四百五十(1 050-1 500=-450).”这里“不足”用现代观点来看就是负数.当然,当时李悝对负数还没有明确的概念,但却为后来负数概念的出现提供了来源. 负数概念最早出现在《九章算术》这部书中.《九章算术》是我国西汉(公元前206年到公元8年)编成的一部古典数学著作,全书分九章,包
In 2200 BC, when China’s Warring States period, Li Kui (kui), had this record in his calculations: “Clothing: Five people use 1500, less than 400 in their final years (1 050-1 500 =- 450). “Insufficient” is a negative number from a modern point of view. Of course, there was no clear concept of negative numbers at that time, but it provided a source for the emergence of the concept of negative numbers later. The concept of negative numbers first appeared in Chapter Nine Arithmetic. In this book, “Nine Chapters of Arithmetic” is a classical mathematics book compiled in the Western Han Dynasty (206 BC to 8 AD). The book consists of nine chapters.