A sliver is basically a tiny degenerate geometry in the micro/nanometer scale that's basically the result of ambiguous surface intersections. Basically, if you put two say, cylindrical surfaces against each other in NURBS form, floating point noise would generate these microscopic geometric noises, and a lot of what commercial kernel does is they use what they call "healing" operations to clean up those bad microscopic geometries from the models they generate.
Aetheris took a very obvious approach that not many have seemed to tried before: It throws an error when an operation that may create ambiguous intersections and refuses to materialize bad geometry in the first place, which is not really possible to do with traditional NURBS based kernels, whereas Aetheris can because it is analytical first.
Aetheris took a very obvious approach that not many have seemed to tried before: It throws an error when an operation that may create ambiguous intersections and refuses to materialize bad geometry in the first place, which is not really possible to do with traditional NURBS based kernels, whereas Aetheris can because it is analytical first.