Are the Big bang theory and the infinity of the universe mutually exclusive ?

[kalasinman]

Seems to me that infinite is not well defined, and that something can be infinitely small as well as large, although many seem to assume the latter.

[Cath]

Coming from a computing/coding point of view, infinity is most definately a no no .. ie, N divided by '0', infinity divided by N, etc only leads to computational problems/errors.

Coming from a mathematians point of view, I think they allow for infinity, but as I'm not a mathematician that's all I can say about that one. I never did learn how formulas end with meaningful results when they include a variable of infinity.

Are we really sure we understand what we're really saying when we say 'infinity' ?

[Avo]

Aside from the mathematical description of n/0, maybe infinity is just bigger than we can or are able to measure.

[Cath]

In some models a single universe could have infinite matter (the inifinite singularity of infinite density is at least mathematically consistsent (either that or you have a finite amount of matter in a singularity of size zero). You could even have infinitely many of them.

But how does relate to what we see as being the 'real life' universe we appear to inhabit ?

Does what our maths tell us agree with what we find in the 'real' universe ?