常识“正数”是什么意思，起源、典故、生平简介及释义-历史文化

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常识	正数
释义	正数算学术语。（1）大于零之数，与负数相对。魏晋间刘徽云：“今两算得失相反，要令正负以名之。”（2）恰好之数。刘徽以齐同术论盈不足术云：“通计齐则不盈不肭之正数。”
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