This is what I think God is

[Esquilax]

God is mathematics as the Gnostics say. God is the quantum probabilities and fractal geometries that create synchronicities. From the concept of synchronicity you can go into things like the works of Carl Jung.
That's just my two cents.

The other thing is, your concept of god is essentially useless. We already have words to describe these concepts, and those words don't carry any of the theistic baggage that I suspect you're attempting to equivocate into the conversation. Math isn't a god, it's math, and saying that god is math is either pointless- in that you're simply glomming a label onto something that doesn't require it, and are thus playing word games- or unsupported- in that you may be claiming that math is reflective of some actual theistic god, in which case you'd have to both demonstrate that and the other aspects of that god, instead of just pointing at something that already exists and saying "that's god." Either way, there's not much to take seriously here.

You can "prove" god exists easily, so long as you redefine god to mean something that already exists. If I call my coffee cup god (which, given its importance to my mornings, might actually be getting some worship out of me) then yay, I've proven god exists, but I certainly haven't lent any more credibility to any theistic concept of god. I've just played a word game to make god significantly lesser than any religious concept of him. I guess it all comes down to whether you actually want to demonstrate your religious beliefs, or just make an atheist say the words "your god exists" so you can feel reasonable and grandstand to the other theists.