The Hindu-Arabic number system, along with the decimal point, both described by al-Khwarizmi in his book, are the basis of the numbers we use throughout the world today.
花拉子密在他的书中描述的印度-阿拉伯数字系统，以及小数点，都是我们今天在世界各地使用的数字的基础。
Arabic number
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Arabic numerals
Arabic numerals, also called Hindu-Arabic or Indo-Arabic numerals, are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, based on the Hindu–Arabic numeral system, the most common system for the symbolic representation of numbers in the world today. In this system, a sequence of digits such as "975" is read as a single number, using the position of the digit in the sequence to interpret its value. The symbol for zero is the key for the effectiveness of the system, which was developed by ancient mathematicians in the Indian Subcontinent around AD 500.
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