χ Values for Blue Emission Lines in M Dwarfs
نویسندگان
چکیده
منابع مشابه
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Let B(G) = {X : X ∈ Rn×n,X = X , I ≤ X ≤ I + A(G)} and C(G) = {X : X ∈ Rn×n,X = X , I − A(G) ≤ X ≤ I + A(G)} be classes of matrices associated with graph G. Here n is the number of vertices in graph G, and A(G) is the adjacency matrix of this graph. Denote r(G) = minX∈C(G) rank(X), r+(G) = minX∈B(G) rank(X). We have shown previously that for every graph G, α(G) ≤ r+(G) ≤ χ(G) holds and α(G) = r...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2008
ISSN: 0004-6280,1538-3873
DOI: 10.1086/593024