mathematically characterize the geometry of the cavity/void space in nanoporous materials for predicting adsorption and comparing materials. Several methods to mathematically describe pores of materials include using the Voronoi decomposition, algebraic topology, radial distribution functions, and density of minima in the potential energy landscape. For extended networks, the MOFomics 33 approach fits cylinders to the channels and describes the pore landscape as a graph of spheres (representing cages) connected to cylinders.