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Big Bang singularity

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Does a singularity contain mass?? if yes then according to big bang , our universe sprang into existence as “singularity” around 13.7 billion years ago. it means there was already a mass centered in zero volume.

and only a black-hole has singularity it means at the time of big bang there was a black hole in which explosion occurred.
please guide me and give me ans.

 

Asked Shyam

 

Answer:

The word singularity means

“the state, fact, quality, or condition of being singular.”

“a point at which a function takes an infinite value, especially in space–time when matter is infinitely dense, such as at the centre of a black hole.”

” a point at which the derivative of a given function of a complex variable does not exist but every neighborhood of which contains points for which the derivative does exist”

Evidently, singularity refers to a unique situation, in big bang whatever state of affairs triggered contributes to the singularity.

 

Refer to

https://en.wikipedia.org/wiki/Initial_singularity

http://www.hawking.org.uk/the-beginning-of-time.html

Did The Universe Really Begin With a Singularity?

http://www.big-bang-theory.com/

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