Like the Hindus, the Arabs worked freely with irrationals.

阿拉伯人也象印度人那样随便使用无理数。

In 1869 Charles Meray, an apostle of the arithmetization of mathematics, gave a definition of the irrationals.

1869年查尔斯·梅雷作为数学算术化的革新者给出无理数的一个定义。