Keberadaan Graf dengan Dimensi Partisi Bintang yang Diberikan
DOI:
https://doi.org/10.25077/jmu.4.3.75-79.2015Abstract
Misalkan terdapat graf G = (V, E). Untuk suatu titik v ∈ V (G) dan suatu subhimpunan sebarang S dari V (G), jarak antara v dan S didefinisikan sebagai d(v, S) = min{d(v, x)|x ∈ S}. Misalkan Π= {S1, S2, · · · , Sk} adalah partisi-k dari V (G). Representasi dari v terhadap Πadalah vektor-k yang dilambangkan dengan r(v|Π) = (d(v, S1), d(v, S2), · · · , d(v, Sk)). Partisi Πadalah partisi penyelesaian untuk G jika untuk setiap u, v di V (G), berlaku r(u|Π) 6= r(v|Π). Nilai minimum k yang ada untuk partisi-k penyelesaian dari V (G) dinamakan dimensi partisi dari G, yang dilambangkan dengan pd(G). Partisi Π= {S1, S2, · · · , Sk} adalah partisi-k penyelesaian bintang untuk G jika partisi dari V (G) dan masing-masing subgraf dari G yang mengandung Si, untuk 1 ≤ i ≤ k adalah bintang. Minimum k yang mengandung partisi-k penyelesaian bintang dari V (G) dinamakan dimensi partisi bintang dari G yang dilambangkan spd(G). Pada makalah ini akan dikaji kembali makalah [3] yang membahas tentang keberadaan graf dengan dimensi partisi bintang yang diberikan.
Kata Kunci: Partisi Penyelesaian, Dimensi Partisi, Dimensi Partisi Bintang, Graf Bintang
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