Title of article :
A short proof for Auslander’s defect formula Original Research Article
Author/Authors :
Henning Krause، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Abstract :
We give a short proof of Auslander’s formula relating the covariant and the contravariant defect of a short exact sequence in a module category. An immediate consequence is the classical Auslander–Reiten formula relating Ext and Hom.
Keywords :
Short exact sequence , Contravariant defect , Covariant defect , Dual of transpose , Auslander–Reiten formula
Journal title :
Linear Algebra and its Applications
Journal title :
Linear Algebra and its Applications
