Flexible affine cones and flexible coverings

  title={Flexible affine cones and flexible coverings},
  author={Mateusz Michałek and Alexander Perepechko and Hendrik S{\"u}{\ss}},
  journal={Mathematische Zeitschrift},
We provide a new criterion for flexibility of affine cones over varieties covered by flexible affine varieties. We apply this criterion to prove flexibility of affine cones over secant varieties of Segre–Veronese embeddings and over certain Fano threefolds. We further prove flexibility of total coordinate spaces of Cox rings of del Pezzo surfaces. 

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