Abstract
We show that there is a SLn-stable closed subset of an affine Schubert variety in the infinite-dimensional flag variety (associated to the Kac-Moody group \( \widehat{{\mathrm{SL}}_n} \)) which is a natural compactification of the cotangent bundle to the finite-dimensional flag variety SLn/B.
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LAKSHMIBAI, V., SESHADRI, C.S. & SINGH, R. COTANGENT BUNDLE TO THE FLAG VARIETY–I. Transformation Groups 24, 127–147 (2019). https://doi.org/10.1007/s00031-017-9466-1
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DOI: https://doi.org/10.1007/s00031-017-9466-1