Definition:Adjoint


 * Adjoint Linear Transformation


 * Upper Adjoint
 * Lower Adjoint


 * Adjoint Functor
 * Left Adjoint Functor
 * Right Adjoint Functor


 * Adjoint Matrix, which can mean either:
 * Adjugate Matrix
 * Hermitian Conjugate

Also see

 * Definition:Adjunction
 * Definition:Adjugate