In mathematics Zero denote nothingness. But in physics Zero may be otherwise called as singularity.
Recently Stephen Hawking told Neil deGrasse Tyson at the "Star Talk" show aired on National Geographic Channel that the Big Bang Theory held that the universe in retrospective can shrink to the size of an extremely small "subatomic ball" known as the singularity. The laws of physics and time cease to function inside that tiny particle of heat and energy.
As a number, zero is a mathematical object, also denoted by 0, which makes it possible to express an absence as a quantity (zero): this is the number of elements of the empty set. It delineates the positive numbers (+) of the negative numbers (-). It is the smallest integer positive or null. His particular arithmetic properties, including the impossibility of division by zero, sometimes involve treating his case separately. It separates the real numbers into positive and negative and takes place of origin to locate points on the real line.
In algebra, 0 is often used as a symbol to designate the neutral element for addition in most abelian groups, and especially in rings, bodies, vector spaces, and algebras, sometimes as a null element. It is also the absorbent element for multiplication.
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