但是通常余伴随作用必须被修正以使映射等价(this is the case for example for the Euclideangroup). The modification is by a 1-cocycle on the group with values in g ∗ {\displaystyle {\mathfrak
Driessler, Fröhlich “The reconstruction of local observable algebras from the euclidean Green's functions of relativistic quantum field theory”, Annales de l'Institut
(原始内容存档于2017-03-14). Terras, Audrey. Harmonic Analysis on Symmetric Spaces-Euclidean Space, the Sphere, and the Poincaré Upper Half-Plane 2nd. New York, NY: