Extensions of Exchange Rings
β
Pere Ara
π
Article
π
1997
π
Elsevier Science
π
English
β 221 KB
We define non-unital exchange rings and we prove that if I is an ideal of a ring R, then R is an exchange ring if and only if I and RrI are exchange rings and idempotents can be lifted modulo I. We also show that we can replace the condition on liftability of idempotents with the condition that the