Bilangan ramsey untuk graf bintang dan graf siklus
Keywords:
Ramsey Number, Star Graph, Cycle Graph, Graph Theory, CombinatoricsAbstract
Ramsey theory is a branch of combinatorics that studies the existence of specific structures within edge colored complete graphs. This paper examines Ramsey numbers for the pair consisting of a star graph and cycle graph . The aim of this study is to present the theoretical foundations, basic properties, and main results concerning the exact value of based on existing literature. The method used is a literature review focusing on the results of Parsons and Lawrence as well as recent developments. The results show that the Ramsey number for this pair depends on the parity of the cycle and the relationship between and , yielding three main cases covering small odd cycles, small even cycles, and long cycles. In addition, common proof techniques are discussed, including critical graph constructions, degree analysis, and applications of Dirac’s and Turán’s theorems. This study also highlights several generalizations of Ramsey numbers, such as multipartite, wheel graphs, multicolor versions, and long even cycles.
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