Journal of Combinatorial Theory, Series BVolume 61, Issue 1, May 1994, Pages 103-110Regular ArticleOn Distance-Regular Graphs with ki = kjAuthor links open overlay panelSuzuki H.Show moreShareCitehttps://doi.org/10.1006/jctb.1994.1035Get rights and contentUnder an Elsevier user licenseopen archiveAbstractLet Γ be a distance-regular graph with diameter d. We show that if ki = kj with i < j and i + j ≤ d, then Γ is either an antipodal two-cover or ki = ki + l = ... = kj.Previous article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1994 Academic Press. All rights reserved.