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math.RA2004
Abelian exact subcategories closed under predecessors
Ibrahim Assem, Manuel Saorin
In the category of finitely generated modules over an artinian ring, we classify all the abelian exact subcategories closed under predecessors or, equivalently, all the split torsi…
math.RA2003
On semiprimary rings of finite global dimension
Manuel Saorin
Suppose that is a semiprimary ring satisfying one of the two conditions: 1) its Yoneda ring is generated in finite degrees; 2) its Loewy length is less or equal than three. We…