• openAccess   Comparison of exit moment spectra for extrinsic metric balls 

      Hurtado, Ana; Markvorsen, Steen; Palmer Andreu, Vicente Springer Science+Business Media B.V. (2012)
      We prove explicit upper and lower bounds for the L1-moment spectra for the Brownian motion exit time from extrinsic metric balls of submanifolds Pm in ambient Riemannian spaces Nn. We assume that P and N both have ...
    • openAccess   Extrinsic isoperimetric analysis on submanifolds with curvatures bounded from below 

      Markvorsen, Steen; Palmer Andreu, Vicente Springer Verlag (2010)
      We obtain upper bounds for the isoperimetric quotients of extrinsic balls of submanifolds in ambient spaces which have a lower bound on their radial sectional curvatures. The submanifolds are themselves only assumed to ...