對於一個圖形G 可以被分解成n個同構〈isomorphic〉的圖形,那我們就稱G 是可以n分解(n-decomposable)。一個森林圖〈forest〉如果都是由星圖〈star〉所組成,那麼稱此森林圖為星林圖〈star forest〉。在這篇論文中,我們將討論星林圖的2 分解以及3 分解。 A graph G is n-decomposable if G can be decomposed into n isomorphic subgraphs. A star forest is a forest of which each component is a star. In this thesis, we will investingate 2-decomposable and 3-decomposable star forests.