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math.CT2009
A characterization of long exact sequences coming from the snake lemma
Jan Stovicek
Given an abelian category, we characterize the long exact sequences of length six which can be obtained from the snake lemma. Equivalently, these are the long exact sequences which…
math.RA2009★ 9 cited
Tilting via torsion pairs and almost hereditary noetherian rings
Jan Stovicek, Otto Kerner, Jan Trlifaj
We generalize the tilting process by Happel, Reiten and Smalø to the setting of finitely presented modules over right coherent rings. Moreover, we extend the characterization of qu…