Sorry, but I just want to know where I can learn more about this idea. ie. Where matter is, space-time is not. (I know it's a bad way to state the idea because space-time isn't within another space of some kind.) What I'm trying to explain is the idea that elementary particles are "voids" of space-time. Of course, I can't just focus on particles themselves, because they are waves too. So, particles are described with delta functions, and from the arrangement of those, we can get a wave function. Perhaps the delta function is the point of singularity, and the wave function is the warped spacetime that leads to the singularity, but due to the uncertainty principle, the location of the singularity can't be fully known, so imagine it being "not fully there" within some radius, and the wave function shows the "dent" or "warp" in space that it produces. Much like a black hole, the singularity is probably at the center of the warped space. With the equivalence principle, you can say that space-time resists accelerations of particles, but not velocities (not too sure on this). So if you say that a particle is a "void" of space-time, it is the properties of space-time being "punctured" and connected to itself somewhere else which looks as if there is a particle there which has mass (because mass resists accelerations). I hope I've elaborated enough, and I know this must've been thought of before and probably refuted. I'm just wondering if anyone has any info on the subject; if the idea has a name or something. p.s. The main thing I mean to express is the idea that maybe matter isn't something that "exists within space-time" but instead, there is no space-time "inside" a particle, and space-time contains nothing at all, but is just a dynamic and self-interacting medium. Imagine a sphere, now put a hole through it, (the hole is represented by a surface cutting through the middle and connecting to the outter surface), this merely changes the original surface to a different configuration, and you can reshaped it into a donut. (I wish I could put this in topological language but I haven't taken a topology class). Now think of this as a "flatlander". Go up a spacial dimension and you can poke a hole through this 4-D space which would be like a "volume" connecting the previous volume to itself. In this instance, when viewed from a "flatlander" inside (a 3-d creature), he/she would see two seperate "points", one with a vector field flowing in, and one with a vector field flowing out. Now suppose that there are is a discrete spectrum of allowed "punctures" or "holes" in this 4-d space (I'm only speaking of space here, not time just yet), and then somehow you get a discrete spectrum of elementary particles from this.