3D mathematics is a subject related to computational geometry. 3D math is the technical basis of computer graphics and computer 3D game development, while computational geometry is a subject that studies how to solve geometric problems with numerical methods. Both 3D math and computational geometry are widely used in fields that use computers to simulate the 3D world, such as graphics, games, simulations, robotics, virtual reality, animation design, and more.

DjVu is a hierarchical image compression technology for distributing documents and images with ultra high compression ratio. Under the same quality level, it has only about 1/10 file size of PDF. It was developed by AT&T Labs in 1996 and enables the high-quality scanned images of almost any traditional printed materials to be transferred through Internet at a very high speed.