Some better results estimating the shift function in terms of busy beaver function. - Ruiguang Yang; Longyun Ding; Shurun Xu (SIGACT News, 1997)

Diagonal actions and Borel equivalence relations. - Longyun Ding; Su Gao (J. Symb. Log., 2006)

Borel reducibility and finitely Hölder(α) embeddability. - Longyun Ding (Ann. Pure Appl. Log., 2011)

Borel reducibility and Hölder(α) embeddability between Banach spaces. - Longyun Ding (J. Symb. Log., 2012)

Characterization of ℓp-like and c0-like equivalence relations. - Longyun Ding (Math. Log. Q., 2014)

On Equivalence Relations Generated by Schauder Bases. - Longyun Ding (J. Symb. Log., 2017)

Reductions on equivalence relations generated by universal sets. - Longyun Ding; Ping Yu (Math. Log. Q., 2019)

On equivalence relations generated by Cauchy sequences in countable metric spaces. - Longyun Ding; Kai Gu (Ann. Pure Appl. Log., 2020)

Decomposing Functions of Baire class $2$ on Polish Spaces. - Longyun Ding; Takayuki Kihara; Brian Semmes; Jiafei Zhao (J. Symb. Log., 2020)

On Equivalence Relations induced by Locally Compact Abelian Polish Groups. - Longyun Ding; Yang Zheng (J. Symb. Log., 2025)