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The detour polynomial of a graph is the characteristic polynomial of the detour matrix of
.
Precomputed detour polynomials for many named graphs are available in the Wolfram Language as GraphData[graph, "DetourPolynomial"].
Since a Hamilton-connected graph with vertex count has all off-diagonal matrix elements equal to
, the detour polynomial of such a graph is given by
.
The following table summarizes detour polynomials for some common classes of graphs. Here, is a Chebyshev polynomial of the first kind and
is a Chebyshev polynomial of the second kind.
graph | detour polynomial |
Andrásfai graph | |
antiprism graph | |
barbell graph | |
book graph |
|
cocktail party graph |
|
complete bipartite graph |
|
complete graph |
|
complete tripartite graph |
|
crossed prism graph | |
crown graph for |
|
gear graph | |
halved cube graph |
|
helm graph | |
hypercube graph |
|
Keller graph |
|
king graph |
|
Möbius ladder |
|
Mycielski graph |
|
odd graph |
|
path graph |
|
prism graph |
|
Sierpiński tetrahedron graph | |
star graph |
|
wheel graph |
The following table summarizes the recurrence relations for detour polynomials for some simple classes of graphs.
graph | order | recurrence |
path graph |
5 |
Nikolić, S.; Trinajstić, N.; and Mihalić, A. "The Detour Matrix and the Detour Index." Ch. 6 in Topological Indices and Related Descriptors in QSAR and QSPR (Ed. J. Devillers A. T. and Balaban). Amsterdam, Netherlands: Gordon and Breach, pp. 279-306, 2000.
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ما لا تعرفه عن قهوتك.. طريقة تحضيرها تؤثر على صحة قلبك
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الخلايا الشمسية الشفافة.. الحل المستقبلي لإنتاج الطاقة دون المساس بمظهر المباني
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المجمَع العلمي يقيم ختمة قرآنية في جامعتي الكوفة والبيان
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