Abstract
We suggest a combinatorial criterion for the smoothness of an arbitrary spherical variety using the classification of multiplicity-free spaces, generalizing an earlier result of Camus for spherical varieties of type A.
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Gagliardi, G. A combinatorial smoothness criterion for spherical varieties. manuscripta math. 146, 445–461 (2015). https://doi.org/10.1007/s00229-014-0713-7
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DOI: https://doi.org/10.1007/s00229-014-0713-7