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Displaying similar documents to “Ext1 for Eyl modules of SL2 (K).”

On injective modules.

Kiiti Morita, Hiroyuki Tachikawa, Yutaka Kawada (1957/58)

Mathematische Zeitschrift

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Relative Auslander-Reiten sequences for quasi-hereditary algebras

Karin Erdmann, José Antonio de la Peña, Corina Sáenz (2002)

Colloquium Mathematicae

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Let A be a finite-dimensional algebra which is quasi-hereditary with respect to the poset (Λ, ≤), with standard modules Δ(λ) for λ ∈ Λ. Let ℱ(Δ) be the category of A-modules which have filtrations where the quotients are standard modules. We determine some inductive results on the relative Auslander-Reiten quiver of ℱ(Δ).