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(k,d)-Coloring: различия между версиями

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'''<math>(k,d)</math>-Coloring''' --- <math>(k,d)</math>-раскраска.  
'''<math>\,(k,d)</math>-Coloring''' — ''[[(k,d)-Раскраска|<math>\,(k,d)</math>-раскраска]].''


Let <math>k</math> and <math>d</math> be positive integers such that <math>k \geq 2d</math>. A
Let <math>\,k</math> and <math>\,d</math> be positive integers such that <math>\,k \geq 2d</math>. A '''<math>\,(k,d)</math>-coloring''' of a [[graph, undirected graph, nonoriented graph|graph]] <math>\,G = (V,E)</math> is a mapping <math>\,c: V \rightarrow Z_{k}= \{0,1, \ldots, k-1\}</math> such that, for each [[edge]] <math>\,(u,v) \in E</math>, <math>\,|c(u)- c(v)|_{k} \geq d</math>, where <math>\,|x|_{k} = \min\{|x|,k-|x|\}</math>. This generalizes a usual notion of a ''[[k-Coloring|<math>\,k</math>-coloring]]'': an ordinary <math>\,k</math>-coloring of <math>G</math> is just a <math>\,(k,1)</math>-coloring.
'''<math>(k,d)</math>-coloring''' of a graph <math>G = (V,E)</math> is a mapping <math>c: V \rightarrow Z_{k}
 
= \{0,1, \ldots, k-1\}</math> such that, for each edge <math>(u,v) \in E</math>, <math>|c(u)
==Литература==
- c(v)|_{k} \geq d</math>, where <math>|x|_{k} = \min\{|x|,k-|x|\}</math>. This
 
generalizes a usual notion of a ''<math>k</math>-coloring'': an ordinary <math>k</math>-coloring
* Евстигнеев В.А., Касьянов В.Н. Словарь по графам в информатике. — Новосибирск: Сибирское Научное Издательство, 2009.
of <math>G</math> is just a <math>(k,1)</math>-coloring.