a branch of mathematics which studies the properties of geometrical forms which retain their identity under certain transformations, such as stretching or twisting, which are homeomorphic. See also topologist.
configuration, especially in three dimensions; -- used, e. g. of the configurations taken by macromolecules, such as superhelical DNA.
A mathematical term that refers to the spatial relationships between shapes. Once topology is established via a GIS, concepts such as beside, nearest, within, around, distance between, etc. all have meaning to a computer. Some GIS systems require that topology be established as a distinct step in the production of a layer. In Arcview, a shapefile has its topology already established.