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在数学里,零(zero)既是一个基本的概念,又是一个独立的数。在人类产生数的阶段,人们在计数时,逐步形成了用符号“0”来表示没有的习惯,这是零的原始概念。
In mathematics, zero is both a basic concept and an independent number. In the stage of human generation, when people count, they gradually formed the habit of not using the symbol “0” to express that this is the original concept of zero.