Xin Wei

Xin Wei

Always Explore

Curriculum Vitae

Current Position

Postdoctoral Research Fellow
ECOPRO Research Group, Institute for Basic Science (IBS), Daejeon, Korea
Jan 2026 – Present

Research Interests

Extremal and additive combinatorics, graph theory, and coding theory.

Education

Ph.D. in Applied Mathematics, University of Science and Technology of China (USTC)
Sep 2020 – Dec 2025
Advisor: Prof. Xiande Zhang
Dissertation: Extremal Combinatorics and Its Applications in Data Storage and Security (in Chinese)

Graduate study in Applied Mathematics, USTC
Sep 2019 – Jul 2020

B.Sc. in Mathematics and Applied Mathematics, USTC
Aug 2015 – Jul 2019
Thesis: On Problems about Balls and Covering Codes in Permutation Groups under Infinity Norm (in Chinese)

Publications and Preprints

Preprints

  1. The Erdős–Gallai bound for consecutive even cycle lengths
    Y. Chen, H. Liu, X. Wang, X. Wei, and F. Yang.
    arXiv:2608.27404, 2026.

  2. Small circumference in regular sublinear expanders
    Y. Chen, H. Liu, X. Wei, and F. Yang.
    arXiv:2608.20190, 2026.

  3. The Hilton–Milner type results of \((k,\ell)\)-sum-free sets in \(\mathbb{F}_p^n\)
    X. Wei, X. Zhang, and G. Ge.
    arXiv:2512.22835, 2025.

Refereed Journal Publications

  1. Separating hash families with large universe
    X. Wei, X. Zhang, and G. Ge.
    Journal of Combinatorial Theory, Series A, 216 (2025), Article 106075.
    DOI

  2. On supersaturation for oddtown and eventown
    X. Wei, Y. Zhao, X. Zhang, and G. Ge.
    SIAM Journal on Discrete Mathematics, 39 (2025), no. 4, 2311–2327.
    DOI · arXiv

  3. On set systems with strongly restricted intersections
    X. Wei, X. Zhang, and G. Ge.
    Designs, Codes and Cryptography, 93 (2025), no. 3, 667–682.
    DOI

  4. Swap-robust and almost supermagic complete graphs for dynamical distributed storage
    X. Wei, X. Zhang, and G. Ge.
    IEEE Transactions on Information Theory, 70 (2024), no. 8, 5606–5623.
    DOI

  5. New results on ternary constant weight codes under \(\ell_1\)-metric
    X. Wei and X. Zhang.
    Scientia Sinica Mathematica, 53 (2023), no. 2, 325–338. (In Chinese.)
    DOI

  6. Balanced set codes with small intersections
    W. Yu, Y. Xi, X. Wei, and G. Ge.
    IEEE Transactions on Information Theory, 69 (2023), no. 1, 147–156.
    DOI

  7. Optimal ternary codes with weight \(w\) and distance \(2w-2\) in \(\ell_1\)-metric
    X. Wei, T. Chen, and X. Zhang.
    IEEE Transactions on Information Theory, 67 (2021), no. 11, 7221–7231.
    DOI

  8. Covering radius of permutation groups with infinity-norm
    X. Wei and X. Zhang.
    Discrete Mathematics, 343 (2020), no. 4, Article 111701.
    DOI

Talks