topology(n = noun.cognition) analysis situs - the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions;
The art of, or method for, assisting the memory by associating the thing or subject to be remembered with some place. [1913 Webster]
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. [PJC]
configuration, especially in three dimensions; -- used, e. g. of the configurations taken by macromolecules, such as superhelical DNA. [PJC]