Let Γ be a regular graph with n vertices, diameter D, and d + 1 In a previous paper, the authors showed that if P (λ) > n -1, then D ≤ d -1, where P is the polynomial of degree d-1 which takes alternating values ±1 at λ 1 , . . . , λ d . The graphs satisfying P (λ) = n -1, called boundary graphs, h
Resistance distance in regular graphs
✍ Scribed by I. Lukovits; S. Nikolić; N. Trinajstić
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 240 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0020-7608
No coin nor oath required. For personal study only.
✦ Synopsis
This report considers the resistance distance as a recently proposed new
Ž
. intrinsic metric on molecular graphs, and in particular, the sum R over resistance distances between all pairs of vertices is considered as a graph invariant. It has been
vertices and K denotes a complete graph containing N vertices. The formulas to obtain N Ž . the R for two classes of regular graphs cycles and complete graphs are derived. Numerical values of R for four Platonic molecules are also given. They ordered the considered Platonic solids as the icosahedron, the cube, the octahedron, and the tetrahedron according to complexity of their Schlegel graphs. This order agrees with those obtained by many other, frequently used descriptors.
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