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A set of edges $$X\subseteq E(G)$$ X ⊆ E ( G ) of a graph G is an edge general position set if no three edges from X lie on a common shortest path. The edge general position number $${\textrm{gp}}_{\textrm{e}}(G)$$ gp e ( G ) of G is the cardinality of a largest edge general position set in G. Graphs G with $${\textrm{gp}}_{{\textrm{e}}}(G) = |E(G)| - 1$$ gp e ( G ) = | E ( G ) | - 1 and with $${\textrm{gp}}_{{\textrm{e}}}(G) = 3$$ gp e ( G ) = 3 are respectively characterized. Sharp upper and lower bounds on $${\textrm{gp}}_{{\textrm{e}}}(G)$$ gp e ( G ) are proved for block graphs G and exact values are determined for several specific block graphs.
A set of edges $$X\subseteq E(G)$$ X ⊆ E ( G ) of a graph G is an edge general position set if no three edges from X lie on a common shortest path. The edge general position number $${\textrm{gp}}_{\textrm{e}}(G)$$ gp e ( G ) of G is the cardinality of a largest edge general position set in G. Graphs G with $${\textrm{gp}}_{{\textrm{e}}}(G) = |E(G)| - 1$$ gp e ( G ) = | E ( G ) | - 1 and with $${\textrm{gp}}_{{\textrm{e}}}(G) = 3$$ gp e ( G ) = 3 are respectively characterized. Sharp upper and lower bounds on $${\textrm{gp}}_{{\textrm{e}}}(G)$$ gp e ( G ) are proved for block graphs G and exact values are determined for several specific block graphs.
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