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Differential Operator Approach to ıquantum Groups and Their Oscillator Representations

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Abstract

For a quasi-split Satake diagram, we define a modified q-Weyl algebra, and show that there is an algebra homomorphism between it and the corresponding ıquantum group. In other words, we provide a differential operator approach to ıquantum groups. Meanwhile, the oscillator representations of ıquantum groups are obtained. The crystal basis of the irreducible subrepresentations of these oscillator representations are constructed.

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Acknowledgements

We thank the referees for many useful comments and suggestions.

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Correspondence to Zhao Bing Fan.

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Conflict of Interest The authors declare no conflict of interest.

Additional information

The first author was partially supported by the NSF of China grant 12271120, the NSF of Heilongjiang Province grant JQ2020A001, and the Fundamental Research Funds for the Central Universities

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Fan, Z.B., Geng, J.C. & Han, S.L. Differential Operator Approach to ıquantum Groups and Their Oscillator Representations. Acta. Math. Sin.-English Ser. 40, 1360–1374 (2024). https://doi.org/10.1007/s10114-024-2151-0

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