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math.QA2026
Thickening realization and positivity properties of canonical bases
Jiepeng Fang, Xuhua He
Let be a quantum group associated with a symmetric Cartan datum, let be its modified form, and let be the canonical basis of $\do…
math.QA2025
Canonical bases of tensor products and positivity properties
Jiepeng Fang, Xuhua He
Let be a quantum group of symmetric type. We introduce the {\it thickening realization} to realize (a suitable approximation of) the tensor product ${^ωΛ_{λ_1}}\otimes…