Isotopy may refer to: Mathematics Homotopy#Isotopy, a continuous path of homeomorphisms connecting two given homeomorphisms is an isotopy of the two given homeomorphisms in homotopy Regular isotopy of a link diagram, an equivalence relation in knot theory Ambient isotopy (or h-isotopy), two subsets of a fixed topological space are ambient isotopic if there is a homeomorphism, isotopic to the identity map of the ambient space, which carries one subset to the other Isotopy of quasigroups. See Quasigroup#Homotopy and isotopy. Isotopy of loops, a triple of maps with certain properties. Isotopy of an algebra, a triple of maps with certain properties. Semiotics Isotopy, a repetition of a basic meaning-trait (seme); the direction taken by an interpretation of the text See also Isotopic (disambiguation) Isotope (disambiguation)