Back in school, we were taught about venn diagrams. Here's my not so strict interpretation! It's "not so strict" because the borders, upon close inspection, aren't well defined. It's a venn+artistic license. I call it mathematical graffiti.
Here're some closeups...
In the overlapping region, the lines that make up the disks clearly fight for space. Unlike a venn diagram, where usually the overlapping regions combine according to some logical criteria. Here, the component sets fight for indentity.
The non-regular shape of the border region is evident here. Each disk is comprised of thousands of individual lines, emanating from its centre. They have a pseudo-random perturbation from the vector pointing directly away from the centre of the disk.
I think I'll call it Luminosity. The white background seems to penetrate through the disks, giving them a lightbox type of visual effect.
Have a look here should you want a print of Luminosity.