(n)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, Syn.analysis situs
n. [ Gr. &unr_; place + -logy. ] The art of, or method for, assisting the memory by associating the thing or subject to be remembered with some place. [ R. ] [ 1913 Webster ]
2. 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 ]
3. configuration, especially in three dimensions; -- used, e. g. of the configurations taken by macromolecules, such as superhelical DNA. [ PJC ]