Colouring matter (arsenical) used for colouring candles
نویسندگان
چکیده
منابع مشابه
Colouring graphs with bounded generalized colouring number
Given a graph G and a positive integer p, χp(G) is the minimum number of colours needed to colour the vertices of G so that for any i ≤ p, any subgraph H of G of tree-depth i gets at least i colours. This paper proves an upper bound for χp(G) in terms of the k-colouring number colk(G) of G for k = 2p−2. Conversely, for each integer k, we also prove an upper bound for colk(G) in terms of χk+2(G)...
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ژورنال
عنوان ژورنال: The Analyst
سال: 1889
ISSN: 0003-2654,1364-5528
DOI: 10.1039/an8891400083