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铜镜收藏家王纲怀在《中国收藏》2012年第4期发表的《汉代铜镜巧解数学难题》一文中,用大量客观存在的物证论述了“在战国时代,对于铜镜纹饰几何作图来说,早已解决了数字11以内的素数(素数其定义是大于1的整数,除了本身和1以外,不能被其他正整数所整除的数字)问题。其中3、5、7三个数字较为突出,如山三镜、五山镜、七连弧镜等”。
Bronze mirror collector Wang Ganghuai in the “Chinese Collection” 2012 the fourth issue of the “Han Dynasty bronze mirror clever mathematical solution,” a text, with a large number of objective evidence of existence of the “Warring States Period, for bronze mirror decoration geometric mapping , The prime numbers within prime number 11 (the prime number is defined as an integer greater than 1 and can not be divisible by other positive integers other than itself and 1) have long been resolved, of which three, three, five, and seven are prominent , Such as the mountain three mirror, five mirror, seven arc mirror, etc. ”.