The action of inverting. / Being in an inverted state; being upside down or in a reverse sequence. / (music) The reversal of an interval; the move of one pitch in an interval up or down an octave.

In an inversive manner.

(mathematics) Alternative form of invertibility

Either concept, the inverse of the other, of a conceptual pair.

(linear algebra) Of a matrix A, another matrix B such that A multiplied by B and B multiplied by A both equal the identity matrix.

(mathematics) Proportional to the reciprocal of the independent variable.

(mathematics) For a given function f, another function, denoted f⁻¹, that reverses the mapping action of f; (formally) given a function f:X→Y, a function g:Y→X such that, ∀x∈X,f(x)=y⟹g(y)=x.

(mathematics) The inverse with respect to addition; the opposite.

plural of inverse semigroup

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