What is "the fabric" of space-time?

And guess what? Math is not an answer. Just in case you didn't realize that despite those 30 plus years of studying it, math is not a physical science. Math is not physical. The fact "math" appears to have such an impact is evidence for what I am saying, not the other way around, namely that information and principle are fundamental and come before physical existence. It's a shame you are not brave enough to admit that fact.

Then, with numbers, prove God exists

Yea, but it'd still be interesting to see how someone can define something with no energy and no mass as "material" or "physical."