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For a given connected (undirected) graph G, the minimum rank of G=(V(G),E(G)) is defined to be the smallest possible rank over all hermitian matrices A whose (i,j)th entry is non-zero if and only if i≠j and {i,j} is an edge in G ({i,j}∈E(G)). For each vertex x in G (x∈V(G)), N(x) is the set of all neighbors of x. Let R be the equivalence relation on V(G) such that∀x,y∈V(G)xRy⇔N(x)=N(y).Our aim is...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.