0 is an integer between-1 and 1. Is the smallest natural number and also a rational number. 0 is neither positive nor negative, but the dividing point between positive and negative numbers.

0 has no reciprocal, the reciprocal of 0 is 0, the absolute value of 0 is 0, the square root of 0 is 0, the cube root of 0 is 0, 0 times any number equals 0, and the power of 0 of any number except 0 equals 1. 0 cannot appear as a denominator, and all multiples of 0 are 0. 0 cannot be used as a divisor.

Related history:

Another history of 0: the discovery of 0 began in India. Around 2000 BC, the symbol "0" was used in Vedas, the oldest Brahmin literature in ancient India. At that time, 0 indicated that there was no (empty) position in Brahmanism in India. Around the beginning of the 6th century, India began to use the notation of fate. At the beginning of the 7th century, the great Indian mathematician Graf Magpuda first explained that 0 of 0 is 0, and any number can be obtained by adding or subtracting 0.

Unfortunately, he didn't mention the example of calculating with the symbol of life position. Some scholars believe that the concept of "0" was born and developed in India because of the philosophical thought of "absolutely nothing" in Indian Buddhism.

In 733 AD, an Indian astronomer introduced this notation to Arabs during his visit to Baghdad, the capital of Iraq, because it was simple and easy to use, and soon replaced the previous Arabic numerals. This symbol was later introduced into western Europe.