A ($2-\varepsilon$)-approximation ratio for vertex cover problem on special graphs
Subject Areas : Combinatorics, Graph theoryN. Yekezare 1 , M. Zohrehbandian 2 , M. Maghasedi 3
1 - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
2 - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
3 - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
Keywords:
Abstract :
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