Geodesic
Exact sequences of graphs
Algebra and discrete mathematics, Tome 28 (2019) no. 1, pp. 1-19 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper, exact sequences of graphs are defined and investigated. Considering some functors on the category of graphs, we study some conditions to determine exactness of functors.
Keywords: graph category, graph exact sequence, graph functor. 
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Ahmad Abbasi; Ali Ramin. Exact sequences of graphs. Algebra and discrete mathematics, Tome 28 (2019) no. 1, pp. 1-19. http://geodesic.mathdoc.fr/item/ADM_2019_28_1_a0/

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