2 papers
math.CO2025
Integro-differential rings on species and derived structures
Xing Gao, Li Guo, Markus Rosenkranz +2
In the theory of species, differential as well as integral operators are known to arise in a natural way. In this paper, we shall prove that they precisely fit together in the alge…
math.CO2025
Lowering operators on --Schur functions and a lowering operator formula for closed --Schur functions
Yaozhou Fang, Xing Gao, Li Guo
This paper gives a systematic study of the lowering operators acting on the --Schur functions, motivated by the pivotal role played by the operators in the definition and stu…