The Theory of non-existence defines the size of a finite and quantized Universe.

Nothing can exist without a defined state of nonexistence. If we all agree we exist, then existence must be finite and quantized. Without the concept of zero, numbers do not exist. Fundamentally either something exists, or it does not. The smallest element in a set must be set equal to 1. The maximum number of elements (or degrees of freedom) in closed space-time can be no larger than the area of the horizon divided by a Planck area measured at one thermal degree of freedom. This 2-D surface has a quantum of temperature on one side and a nonexistent temperature on the other. As a closed horizon, this surface is a boundary between existence on one side and nonexistence on the other. There must be a bijection between the mass inside the boundary and the number of entangled quantum bits measured at the horizon. You cannot have a differential equal to zero, (aka division by zero). Your differential must be nonzero and finite. You can not have an infinite set of finite differentials, (aka you cannot multiply by infinity). The boundary can be defined by the constants we use, (c²,G, ħ, K_b) measured at the Planck scale.