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A remark on convolution products for quiver Hecke algebras
International Journal of Mathematics ( IF 0.604 ) Pub Date : 2020-09-19 , DOI: 10.1142/s0129167x20500925
Myungho Kim; Euiyong Park

In this paper, we investigate a connection between convolution products for quiver Hecke algebras and tensor products for quantum groups. We give a categorification of the natural projection πλ,μ:V𝔸(λ)𝔸V𝔸(μ)V𝔸(λ+μ) sending the tensor product of the highest weight vectors to the highest weight vector in terms of convolution products. When the quiver Hecke algebra is symmetric and the base field is of characteristic 0, we obtain a positivity condition on some coefficients associated with the projection πλ,μ and the upper global basis, and prove several results related to the crystal bases. We then apply our results to finite type A using the homogeneous simple modules 𝒮T indexed by one-column tableaux T.

更新日期:2020-10-21

 

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