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"Sebuah graf berarah dapat direpresentasikan kedalam beberapa macam bentuk matriks, salah satunya adalah dengan matriks anti-adjacency. Matriks anti-adjacency merupakan sebuah matriks dimana entri-entri dari matriks ini dapat diinterpretasikan sebagai ada atau tidaknya busur berarah dari suatu simpul ke simpul lainnya. Paper ini akan berfokus pada matriks anti-adjacency dari gabungan graf lingkaran berarah. Matriks anti-adjacency adalah sebuah matriks persegi, oleh sebab itu dapat dicari persamaan karakteristik serta nilai eigen dari matriks tersebut. Untuk mencari bentuk umum persamaan karakteristik matriks anti-adjacency dari gabungan graf lingkaran berarah diperoleh dengan cara menghitung nilai determinan dan banyaknya subgraf-subgraf terinduksi pada setiap grafnya. Dengan mencari akar-akar dari bentuk umum persamaan karakteristik matriks anti-adjacency dari gabungan graf lingkaran berarah tersebut, maka akan didapatkan nilai eigen dari graf tersebut.

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A graph could be represented as a matrix in many ways, one of which is an anti-adjacency matrix. Anti-adjacency matrix is a matrix whose entries shows whether there is a directed edge from a vertex to another one. This paper focuses on the anti-adjacency matrix of the union of directed cycle graphs. Anti-adjacency matrix is a square matrix, where we could find its characteristic polynomial and eigenvalues. The general form of characteristic polynomial can be found by counting the values of the determinants and the numbers of the cyclic induced subgraphs. Furthermore, the eigenvalues of the union of directed cycle graphs are derived from the general form of its characteristic polynomial."

"Suatu graf berarah dapat direpresentasikan dengan beberapa matriks representasi, seperti matriks adjacency, anti-adjacency, in-degree laplacian, dan out-degree aplacian. Dalam paper ini dibahas polinomial karakteristik dan nilai-nilai eigen dari matriks adjacency, anti-adjacency in-degree laplacian, dan out-degree Laplacian graf matahari berarah siklik. Bentuk umum polinomial karakteristik dari matriks adjacency graf matahari berarah siklik dapat diperoleh dengan menghitung jumlah nilai determinan matriks adjacency subgraf terinduksi siklik dari graf tersebut. Kemudian polinomial karakteristik dari matriks anti-adjacency dapat dicari dengan menghitung jumlah nilai determinan matriks anti-adjacency subgraf terinduksi siklik dan subgraf terinduksi asiklik dari graf matahari berarah siklik. Selanjutnya bentuk umum polinomial karakteristik dari matriks in-degree Laplacian dan out-degree Laplacian dicari dengan menggunakan ekspansi kofaktor matriks-matriks tersebut. Nilai-nilai eigen dari matriks adjacency, matriks anti-adjacency, matriks in-degree Laplacian dan matriks out-degree Laplacian dapat berupa bilangan riil dan bilangan kompleks yang dapat dicari dengan pemfaktoran polinomial karakteristik dengan menggunakan metode Horner ataupun dengan menggunakan bentuk eksponensial dari bilangan kompleks.

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A directed graph can be represented by several matrix representations, such as adjacency matrix, anti-adjacency matrix, in-degree Laplacian matrix, and out-degree Laplacian matrix. In this paper we discuss the general form of characteristic polynomials and eigenvalues of adjacency matrix, anti-adjacency matrix,  in-degree Laplacian matrix, and out-degree Laplacian of directed cyclic sun graph. The general form of the characteristic polynomials of adjacency matrix can be found out by counting the sum of the determinant of adjacency matrix of directed cyclic induced subgraphs from directed cyclic sun graph. Furthermore, the general form of the characteristic polynomials of anti-adjacency matrix can be found out by counting the sum of the determinant of anti-adjacency matrix of the directed cyclic induced subgraphs and the directed acyclic induced subgraphs from directed cyclic sun graph. Moreover, the general form of the characteristic polynomials of in-degree Laplacian and out-degree Laplacian matrix can be found by using the cofactor expansion of those matrices. The eigenvalues of the adjacency, anti-adjacency, in-degree Laplacian, and out-degree Laplacian can be real or complex numbers, which can be figured out by factoring the characteristic polynomials using horner method or the exponential form of the complex numbers."

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"ABSTRAKSebuah graf friendship, baik tak berarah maupun berarah, dapat direpresentasikan dengan sebuah matriks adjacency maupun matriks anti-adjacency Bapat 2010 . Pada tesis ini diberikan polinomial karakteristik dan spektrum matriks adjacency dan anti-adjacency dari graf friendship tak berarah maupun berarah. Graf friendship berarah meliputi graf yang siklik dan asiklik, dengan graf asiklik dibahas untuk dua jenis saja. Beberapa kesimpulan yang menarik didapatkan dari hasil perbandingan polinomial karakteristik dan spektrum dari matriks adjacency dan matriks anti-adjacency.

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ABSTRACTFriendship graph, both undirected and directed graphs, can be represented by an adjacency matrix or an anti adjacency matrix Bapat 2010 . In this thesis, the characteristic polynomials and spectrums of adjacency and anti adjacency matrices for undirected and directed friendship graphs are presented and discussed. Directed friendship graphs cover both cyclic and acyclic graphs, where acyclic friendship graphs are defined for 2 types only. Some interesting results are obtained from the comparison between those characteristic polynomials and spectrums of adjacency matrices with the ones of anti adjacency matrices."

"Suatu graf berarah dapat direpresentasikan dalam sebuah matriks antiadjacency. Jika # merupakan matriks antiadjacency dari suatu graf berarah $ maka %&'()* - # $ ) merupakan polinomial karakteristiknya. Pada skripsi ini dibahas mengenai sifat polinomial karakteristik matriks antiadjacency dari graf -. dengan penambahan dua tali busur. Salah satu sifat yang diperoleh adalah nilai dari koefisien ke ? /, yaitu yang didapat dengan mencari determinan dari matriks antiadjacency. Penambahan dua tali busur menjadikan graf -. memiliki karakteristik yang berbeda-beda sehingga determinan dari matriks antiadjacencynya pun berbeda. Oleh karena itu, dalam skripsi ini graf -. dengan penambahan dua tali busur dibagi menjadi empat bentuk dan penjelasan mengenai determinan dari matriks antiadjacency dari graf -. dengan penambahan dua tali busur dibagi sesuai dengan bentuk ? bentuk tersebut. Sifat lainnya adalah korelasi antara koefisien polinomial karakteristik dengan banyaknya lintasan berarah pada graf.

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A directed graph can be represented by an antiadjacency matrix. If # is an antiadjacency matrix of a directed graph $ then det(λI − R G ) is the characteristic polynomial. This paper will discuss the properties of a characteristic polynomial of an antiadjacency matrix of a dicycle graph -. with two chords. One of the properties acquired is the value of the /th coefficient, which is obtained by finding the determinant of the antiadjacency matrix. The addition of two chords makes the graphs have different characteristics so that the determinant of the antiadjacency matrix will also differ. Therefore, in this paper, graph -. with two chords is divided into four forms and the explanation of the determinant of an antiadjacency matrix of the graph are divided according to the forms. The other property is the correlation between the coefficients of the polynomial characteristic with the directed path of the graphs."