Ideal extensions of graph algebras
Czechoslovak Mathematical Journal, Tome 56 (2006) no. 3, pp. 933-947.

Voir la notice de l'article dans Czech Digital Mathematics Library

Let $\mathcal A$ and $\mathcal B$ be graph algebras. In this paper we present the notion of an ideal in a graph algebra and prove that an ideal extension of $\mathcal A$ by $\mathcal B$ always exists. We describe (up to isomorphism) all such extensions.
Classification : 08A30
Mots-clés : oriented graph; graph (Shallon) algebra; congruence relation; ideal; quotient graph algebra; ideal extension 
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     author = {\v{C}ipkov\'a, Karla},
     title = {Ideal extensions of graph algebras},
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Čipková, Karla. Ideal extensions of graph algebras. Czechoslovak Mathematical Journal, Tome 56 (2006) no. 3, pp. 933-947. https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_3_a11/