Commutative rings over which no endomorphism algebra has an outer automorphism are studied.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm106-1-11, author = {Warren May}, title = {Outer automorphisms of endomorphism algebras}, journal = {Colloquium Mathematicae}, volume = {106}, year = {2006}, pages = {127-133}, zbl = {1099.16009}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm106-1-11} }
Warren May. Outer automorphisms of endomorphism algebras. Colloquium Mathematicae, Tome 106 (2006) pp. 127-133. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm106-1-11/