2010/09/27 by Kuwert, Ernst, Schätzle, Reiner · 1 citation
#Differential Geometry (math.DG) #FOS: Mathematics
paper · doi:10.48550/arxiv.1009.5286
The Willmore energy of a closed surface in Rn is the integral of its squared mean curvature, and is invariant uner Möbius transformations of Rn. We show that any torus in R3 with energy at most 8 π-delta has a representative under the Möbius action, for which the induced metric and a conformal metric of constant (zero) curvature are uniformly equivalent, with constants depending only on delta>0. An analogous estimate is also obtained for surfaces of fixed genus p ≥ 1 in R3 or R4, assuming suitable energy bounds which are sharp for n=3. Moreover the conformal type is controlled in terms of the energy bounds.