Let S = Σi=1 n Rai be a finite normalizing extension of R and suppose that SM is a left S-module. Denote by crk(A) the dual Goldie dimension of the module A. We show that crk(RM) ≤ n · crk(SM) if either SM is artinian or the group homomorphism M → aiM given by x → aix is an isomorphism.
@article{urn:eudml:doc:41018, title = {Dual dimension of modules over normalizing extensions.}, journal = {Publicacions Matem\`atiques}, volume = {37}, year = {1993}, pages = {355-358}, mrnumber = {MR1249237}, zbl = {0806.16028}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41018} }
Shamsuddin, Ahmad. Dual dimension of modules over normalizing extensions.. Publicacions Matemàtiques, Tome 37 (1993) pp. 355-358. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41018/