Jilijun Professor

B.S., Mathematics, Soochow University, Suzhou, China, 1994-1998.

Ph.D., Mathematics, Soochow University, Suzhou, China, 2000-2003. (Advisor: Professor Zhu Lie)

2003,8 - 2006,6: Lecturer, Department of Mathematics, Soochow

University,

2006,7 - 2010,7: Associate Professor, Department of

Mathematics, Soochow University.

2010,8 - present:  Professor, Department of

Mathematics, Soochow University

I received his Ph.D. degree from Soochow University in China in 2003. My research interest lies in combinatorial design theory and its applications. 

Research interest lies in combinatorial design theory and its applications, such as: three wise balanced designs, Steiner quadruple systems with desired properties, large sets of triple systems, transversal 3-designs, covering arrays, optical networks, authentication codes, constant weight codes, frameproof codes and Armstrong codes, frequency hopping sequences.

Linear Algebra, Abstract Algebra, Combinatroial Design Theory, Coding Theory, Finite Fields.

1. 2005-2007: Natural Science Foundation of Universities of Jiangsu Province

   Grant No. 05KJB110111.

2. 2006.1-2006.12: Tianyuan Mathematics Foundation of NSFC Grant No. 10526032.

3. 2008-2010: Natural Science Foundation of China grant No. 10701060.

4. 2013-2015: Natural Science Foundation of China grant No. 11222113.

5. 2009-2012: Natural Science Foundation of China grant No. 10831002.

(Joint with Jianxing Yin, Yanxun Chang, Jianguo Lei, Junlin Zhou and Xiulin Shan)

6. 2015-2019: Natural Science Foundation of China grant No. 11431003.

(joint with Yanxun Chang, Genian Ge, Jianxing Yin, Junlin Zhou and Xuesong Ma)

7. 2019-2022: Natural Science Foundation of China grant No. 11871363.

8. 2023-2026: Natural Science Foundation of China grant No. 12271390.

9. 2027-2030: Natural Science Foundation of China grant No. 12671391.  

1. Ji, Lijun; Liu, Dehai; Wang, Kaishun; Yao, Tian; Yu, Shuhui, s-almost t-intersecting families for vector spaces, Discrete Math. 349 (2026), no. 1, Paper No. 114661, 19 pp.

2. Bao, Jingjun; Ji, Lijun; Xu, Juanjuan; Direct constructions of column-orthogonal strong orthogonal arrays, J. Combin. Theory Ser. A 209 (2025), Paper No. 105965, 24 pp.

3. Yu Shuhui; Ji Lijun; Two new constructions of cyclic subspace codes via Sidon spaces, Des. Codes Cryptogr. 92 (2024), no. 11, 3799-3811. 

4. Yu Shuhui; Ji Lijun; Almost affinely disjoint subspaces and covering Grassmannian codes. Finite Fields Appl., 92 (2023), Paper No. 102292, 15pp. 

5. Ji, Lijun; Liang, Miao; Wang, Yanting; Combinational constructions of splitting authentication  codes with perfect secrecy. Des. Codes Cryptogr. 90 (2022), no. 10, 2491-2515 

6. Ji, Lijun; Lu, Xiao-Nan Symmetric abelian group-invariant Steiner quadruple systems. J. Combin. Theory Ser. A 181 (2021), 105435, 21 pp.