Isotopy

Isotopy may refer to:

Mathematics

 * Homotopy, 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.
 * 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