Hmm, i don't really want to explain it, because part of it's purpose is to be understandable by those beings that should understand it.
I will however say as much, that it has multiple levels of intended meaning. Zero plays a fundamental part in many ontological concepts, and even has a very special meaning regarding how relations work. It also plays a rather interesting role in comparisons. And yet, when viewed from a certain POV, zero does not equal zero... because there are multiple ways to arrive at that value. Two of those ways play an important role in all logic.
Regardless of the above cryptic description: Why did i choose to make that my avatar? What does that have to do with me, besides of me being apparently fascinated by it? Well, like most people, i have a set of ideas that i consider true. Among them, there is a constantly reoccuring pattern. And if i had to express this reoccuring something with a value, then it would be zero.