  | 
      
        
          | Shaoyun Yi (易少云) |  
          | Xiamen University |  
          | School of Mathematical Sciences |  
          |  Xiamen, Fujian 361005, China |  
          | E-mail: yishaoyun926@xmu.edu.cn |  
          | Office: B515 |  
         
       | 
    
  
Welcome! I am a tenure-track Assistant Professor at Xiamen University. Here is my 
CV.
Teaching          Seminar          Selected Talks          Miscellany
Research Interests
Number Theory & Representation Theory
Publications and Preprints
-  The prime number theorem over integers of power-free polynomial values (with Biao Wang).
Submitted, 2025.  [arXiv].
 -  Number of abelian groups and the prime number theorem (with Biao Wang).
Submitted, 2025.
 -  Some ergodic theorems over squarefree numbers and squarefull numbers (with Huixi Li, Biao Wang and Chunlin Wang).
Acta Arithmetica 221 (2025), 117-140.  [arXiv, DOI].
 -  On Erdős covering systems in global function fields (with Huixi Li, Biao Wang and Chunlin Wang).
Journal of Number Theory 266 (2025), 269-280.  [arXiv, DOI].
 -  Some remarks on strong multiplicity one for paramodular forms (with Xiyuan Wang, Zhining Wei and Pan Yan).
Submitted, 2023.  [arXiv].
 -  On Covering Systems of Polynomial Rings over Finite Fields (with Huixi Li, Biao Wang and Chunlin Wang).
Proceedings of the American Mathematical Society 152 (2024), no. 9, 3731-3742.  [arXiv, DOI].
 -  On the minimum modulus problem in number fields (with Huixi Li and Biao Wang).
Submitted, 2023.  [arXiv].
 -  On distinguishing Siegel cusp forms of degree two (with Zhining Wei).
Submitted, 2022.  [arXiv].
 -  Dimension formulas for Siegel modular forms of level  4 (with Manami Roy and Ralf Schmidt, and with an appendix by Cris Poor and David Yuen).
Mathematika 69 (2023), no. 3, 795-840.  [arXiv, DOI].
 - Generalizations of the Erdős-Kac Theorem and the Prime Number Theorem (with Biao Wang, Zhining Wei and Pan Yan).
Communications in Mathematics and Statistics 13 (2025), 1177-1197.  [arXiv, DOI].
 - Classical and adelic Eisenstein series (with Manami Roy and Ralf Schmidt).
To appear in Rocky Mountain Journal of Mathematics, 2024.  [arXiv].
 - Generalizations of Alladi's formula for arithmetical semigroups (with Lian Duan and Ning Ma).
The Ramanujan Journal 58 (2022), no. 4, 1285-1319.  [arXiv, DOI].
 - Congruences for dimensions of spaces of Siegel cusp forms and 4-core partitions (with Chiranjit Ray and Manami Roy).
The Ramanujan Journal 58 (2022), no. 4, 1011-1023.  [SharedIt link, arXiv, DOI].
 - Analogues of Alladi's formula over global function fields (with Lian Duan and Biao Wang).
Finite Fields and Their Applications 74 (2021), 101874, 26 pp.  [arXiv, DOI].
 - On counting cuspidal automorphic representations for GSp(4) (with Manami Roy and Ralf Schmidt).
Forum Mathematicum 33 (2021), no. 3, 821-843.  [arXiv, DOI].
 - Klingen $\mathfrak{p}^2$ vectors for GSp(4).
The Ramanujan Journal 54 (2021), no. 3, 511-554.  [SharedIt link, DOI].
 - Klingen vectors of level 2 for GSp(4).
Ph.D. Thesis, University of Oklahoma, 2019.  [PDF].   
 
Useful Math Links