Geodesic
A duality result for almost split sequences
Colloquium Mathematicum, Tome 80 (1999) no. 2, pp. 267-292.

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

Over an artinian hereditary ring R, we discuss how the existence of almost split sequences starting at the indecomposable non-injective preprojective right R-modules is related to the existence of almost split sequences ending at the indecomposable non-projective preinjective left R-modules. This answers a question raised by Simson in [27] in connection with pure semisimple rings.
DOI : 10.4064/cm-80-2-267-292

Lidia Hügel 1 ; Helmut Valenta 1

1 
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Lidia Hügel; Helmut Valenta. A duality result for almost split sequences. Colloquium Mathematicum, Tome 80 (1999) no. 2, pp. 267-292. doi : 10.4064/cm-80-2-267-292. http://geodesic.mathdoc.fr/articles/10.4064/cm-80-2-267-292/

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