Xihe Li is a lecturer at Shaanxi Normal University. He was a postdoctoral associate at University of Science and Technology of China (supervisor: Prof. Jie Ma). Xihe obtained his Ph.D. degree in 2021 from the Faculty of EEMCS, University of Twente, under the supervision of Prof. Hajo Broersma and Prof. Ligong Wang. He recieved his B.S. degree in 2017 from Northwestern Polytechnical University. Xihe does research in Graph theory and Combinatorics (Ramsey theory, Extremal graph theory, Extremal combinatorics).

Publications and Preprints: 

[1] Xihe Li, Jie Ma, Tianying Xie. Weak rainbow saturation numbers of graphs. Journal of Graph Theory, 2025, 109(1): 35-42.

[2] Xihe Li, Hajo Broersma, Ligong Wang, Growth rates of the bipartite Erdős-Gyárfás function, Journal of Graph Theory, 107(3) (2024), 597-628.

[3] Xihe Li, Hajo Broersma, Ligong Wang, The Erdős-Gyárfás function with respect to Gallai-colorings, Journal of Graph Theory, 101(2) (2022), 242-264.

[4] Xihe Li, Hajo Broersma, Ligong Wang, Integer colorings with no rainbow 3-term arithmetic progression, Electronic Journal of Combinatorics, 29(2) (2022), Paper No.2.28, 15 pp.

[5] Xihe Li, Ligong Wang, Gallai-Ramsey numbers for rainbow $S_3^+$ and monochromatic paths, Discussiones Mathematicae Graph Theory, 42(2) (2022), 349-362.

[6] Xihe Li, Hajo Broersma, Ligong Wang, Extremal problems and results related to Gallai-colorings, Discrete Mathematics, 344(111) (2021), 112567.

[7] Xihe Li, Ligong Wang, Monochromatic stars in rainbow $K_3$-free and $S_3^+$-free colorings, Discrete Mathematics, 343(12) (2020), 112131.

[8] Xihe Li, Ligong Wang, Forbidden rainbow subgraphs that force large monochromatic or multicolored k-connected subgraphs, Discrete Applied Mathematics, 285 (2020), 18-29.

[9] Xihe Li, Ligong Wang, Gallai-Ramsey numbers for a class of graphs with five vertices, Graphs and Combinatorics, 36(6) (2020), 1603-1618.

[10] Xihe Li, Pierre Besse, Colton Magnant, Ligong Wang, Noah Watts, Gallai-Ramsey numbers for rainbow paths，Graphs and Combinatorics, 36(4) (2020), 1163-1175.

[11] Xihe Li, Ligong Wang, Deficiency and forbidden subgraphs of connected, locally-connected graphs, Discussiones Mathematicae Graph Theory, 40 (1) (2020), 195-208.

[12] Xihe Li, Ligong Wang, Xiangxiang Liu, Complete graphs and complete bipartite graphs without rainbow path, Discrete Mathematics, 342(7) (2019), 2116-2126.

[13] Xihe Li, Ligong Wang, Shangyuan Zhang, The signless Laplacian spectral radius of some strongly connected digraphs, Indian Journal of Pure and Applied Mathematics, 49(1) (2018), 113-127.

[14] Xihe Li, Jie Ma, Zhiheng Zheng, On the multicolor Turán conjecture for color-critical graphs, (2024), submitted.

[15] Xihe Li, Zhihui Li, Xiangxiang Liu, Ligong Wang, Monochromatic tree covers in nearly complete graphs and complete bipartite graphs, (2025), submitted.