Abstract
Let a>b>0 and Ba∖Bb={x=(x1,x2)∈R2:b<|x|<a}, and assume that f is a conformal map from Ba∖Bb into Rn, with |∇f|2=2e2u, then (e1,e2) with e1=e−u∂f∂r, and e2=r−1e−u∂f∂θ is a moving frame on f(Ba∖Bb) and it satisfies the following equationd⋆〈de1,e2〉=0, where ⋆ is the Hodge star operator on R2 with respect to the standard metric.We will study the Dirichlet energy of this frame and give some applications.
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