equivalence class
mathematical concept
free loop
type of mathematical object
equivalence class
in music, equality or equivalence between sets or twelve-tone rows
isomorphism class
equivalence class of isomorphic mathematical objects
necklace
an equivalence class of n-character strings over an alphabet of size k, taking all rotations as equivalent
fundamental class
homology class associated to an oriented closed manifold
orbit of a group action
the equivalence class under the equivalence relation induced by a group action on a set