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Let G be a connected reductive group. To any irreducible Gvariety one assigns a certain linear group generated by reflections called the Weyl group. Weyl groups play an important role in the study of embeddings of homogeneous spaces. We establish algorithms for computing Weyl groups for homogeneous spaces and affine homogeneous vector bundles. For some special classes of G-varieties (affine homogeneous vector bundles of maximal rank, affine homogeneous spaces, homogeneous spaces of maximal rankdoi:10.1090/s1088-4165-10-00365-1 fatcat:pif6fps2i5dq5hflt3qathb7yi