Let Ξ be a regular graph with n vertices, diameter D, and d + 1 In a previous paper, the authors showed that if P (Ξ») > n -1, then D β€ d -1, where P is the polynomial of degree d-1 which takes alternating values Β±1 at Ξ» 1 , . . . , Ξ» d . The graphs satisfying P (Ξ») = n -1, called boundary graphs, h
Remarks on distance-regular graphs
β Scribed by Mitsuo Yoshizawa
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 157 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0012-365X
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