学术论文

[1]      Z. Qiao, J. Koolen and G. Markowsky, On the Cheeger constant for distance-regular graphs, J. Combin. Theory Ser. A, 173 (2020), 105227.

[2]      Z. Qiao, Y. Jing and J. Koolen, Non-bipartite distance-regular graphs with a small smallest eigenvalue, Electron. J. Combin., 26 (2019), P2.41.

[3]      Z. Qiao, J. Park and J. Koolen, On 2-walk-regular graphs with a large intersection number c2, European J. Combin., 80 (2019), 224-235.

[4]      Z. Qiao and J. Koolen, A new characterization of the dual polar graphs, J. Combin. Theory Ser. B, 135 (2019), 200-211.

[5]      Z. Qiao and J. Koolen, A valency bound for distance-regular graphs, J. Combin. Theory Ser. A, 155 (2018), 304-320.

[6]      Z. Qiao, J. Koolen and J. Park, 2-Walk-regular graphs with a small number of vertices compared to the valency, Linear Algebra Appl., 510 (2016), 10-24.

[7]      Z. Qiao, S.F. Du and J. Koolen, 2-Walk-regular dihedrants from group-divisible designs, Electron. J. Combin., 23 (2016), P2.51.

[8]      J. Koolen and Z. Qiao, Light tails and the Hermitian dual polar graphs, Des. Codes Cryptogr., 84 (2017), 3-12.

[9]      S. Hayat, J. Koolen, F. Liu and Z. Qiao, A note on graphs with exactly two main eigenvalues, Linear Algebra Appl., 511 (2016), 318-327.









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