%0 Journal Article %A Bratteli, Ola %A Goodman, Frederick M. %T Derivations Tangential to Compact Group Actions: Spectral Conditions in the Weak Closure %J Canadian journal of mathematics %D 1985 %P 160-192 %V 37 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-012-2/ %R 10.4153/CJM-1985-012-2 %F 10_4153_CJM_1985_012_2