Cioabă, Sebastian M.; Gupta, Himanshu; Ihringer, Ferdinand; Kurihara, Hirotake The least Euclidean distortion constant of a distance-regular graph. (English) Zbl 1504.05077 Discrete Appl. Math. 325, 212-225 (2023). MSC: 05C12 05C60 05E30 05C50 15A18 PDFBibTeX XMLCite \textit{S. M. Cioabă} et al., Discrete Appl. Math. 325, 212--225 (2023; Zbl 1504.05077) Full Text: DOI arXiv
Cioabă, S. M.; Koolen, J. H.; Terwilliger, P. Connectivity concerning the last two subconstituents of a \(Q\)-polynomial distance-regular graph. (English) Zbl 1448.05061 J. Comb. Theory, Ser. A 177, Article ID 105325, 6 p. (2021). MSC: 05C12 05C40 05E30 PDFBibTeX XMLCite \textit{S. M. Cioabă} et al., J. Comb. Theory, Ser. A 177, Article ID 105325, 6 p. (2021; Zbl 1448.05061) Full Text: DOI arXiv
Cioabă, Sebastian M.; Koolen, Jack H.; Nozaki, Hiroshi A spectral version of the Moore problem for bipartite regular graphs. (English) Zbl 1428.05187 Algebr. Comb. 2, No. 6, 1219-1238 (2019). MSC: 05C50 05C40 05C12 05C35 05E30 42C05 90C05 94B65 PDFBibTeX XMLCite \textit{S. M. Cioabă} et al., Algebr. Comb. 2, No. 6, 1219--1238 (2019; Zbl 1428.05187) Full Text: DOI arXiv
Brouwer, Andries E.; Cioabă, Sebastian M.; Ihringer, Ferdinand; McGinnis, Matt The smallest eigenvalues of Hamming graphs, Johnson graphs and other distance-regular graphs with classical parameters. (English) Zbl 1397.05098 J. Comb. Theory, Ser. B 133, 88-121 (2018). MSC: 05C50 05C12 PDFBibTeX XMLCite \textit{A. E. Brouwer} et al., J. Comb. Theory, Ser. B 133, 88--121 (2018; Zbl 1397.05098) Full Text: DOI arXiv Link
Cioabă, Sebastian M.; Koolen, Jack H. On the connectedness of the complement of a ball in distance-regular graphs. (English) Zbl 1269.05118 J. Algebr. Comb. 38, No. 1, 191-195 (2013). MSC: 05E30 05C12 05C40 PDFBibTeX XMLCite \textit{S. M. Cioabă} and \textit{J. H. Koolen}, J. Algebr. Comb. 38, No. 1, 191--195 (2013; Zbl 1269.05118) Full Text: DOI