Do you know zero, Ya! the one which is round in shape "0". The first thing to say about zero is that the use of zero is extremely important. Though humans have always understood the concept of nothing or having nothing, the concept of zero is relatively new — it only fully developed in the fifth century A.D. Before then, mathematicians struggled toper form the simplest arithmetic calculations. Today, zero — both as a symbol (or numeral) and a concept meaning the absence of any quantity — allows us to perform calculus, do complicated equations, and to have invented computers.
INDIAN MATHEMATICIANS Brahma gupta attempted to give the rules for arithmetic involving zero and negative numbers in the seventh century. He gave the following rules for addition which involve zero:-The sum of zero and a negative number is negative, the sum of a positive number and zero is positive, the sum of zero and zero is zero. He gave the following rules for Subtraction which involve zero:-A negative number subtracted from zero is positive, a positive number subtracted from zero is negative, zero subtracted from a negative number is negative, zero subtracted from a positive number is positive, zero subtracted from zero is zero.
Zero is used as an empty place indicator in our place-value number system. Hence in a number like 1902 ,the zero is used so that the positions of the 1 and 9 are correct. Clearly 192 means something quite different. The name "zero" derives ultimately from the Arabic sifr which also gives us the word "cipher". The first use of the symbol which we recognise today as the notation for zero "0" is omicron, the first letter of the Greek word for nothing namely "ouden".
Brahma gupta was not able to explain clearly about division. Bhaskara tried to solve the problem by writing n/0 = ∞. If this were true then 0 times ∞ must be equal to every number n, so all numbers are equal. Bhaskara did correctly state other properties of zero such as0 ^ 2 = 0 and √ 0 = 0. The Indian mathematicians could not bring themselves to the point of admitting that one could not divide by zero. The number zero is neither positive nor negative, neither a prime number nor a composite number, nor it is a unit. It is a even number.
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