Abstract
Let $$\widetilde{{{\mathbf {U}}}}^\imath $$ be the universal $$\imath $$ quantum group arising from quantum symmetric pairs. Recently, Lu and Wang formulated a Drinfeld-type presentation for $$\widetilde{{{\mathbf {U}}}}^\imath $$ of split affine ADE type. In this paper, we generalize their results by establishing a Drinfeld-type presentation for $$\widetilde{{{\mathbf {U}}}}^\imath $$ of arbitrary split affine type.
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