(algebra, group theory) A semigroup in which every element x has an inverse y, such that x = xyx and y = yxy.

(geometry) The branch of geometry concerned with inversion transformations, specifically circle inversions in the Euclidean plane, but also as generalised in non-Euclidean and higher-dimensional spaces.

plural of additive inverse

plural of conceptual inverse

plural of inverse cosine

plural of inverse limit

plural of inverse condemnation

plural of inverse system

plural of multiplicative inverse

plural of right inverse