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Conformally Invariant Variational P
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II Conformal transformations - some
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this implies ∀X,Y ∈ R m \{0} if
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This form is called the Hopf differ
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∂ ∂x k (e 2λ δ ij ) = ∂ ∂
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Let k ∈ {1,...,n} and choose i
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If neither A = 0 nor B = 0 The left
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✷ Proof of Lemma II.4 Since u(0)
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III Elementary Differential geometr
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control it gives on the image itsel
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This is the main advantage of worki
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oundary, and sending ∂D 2 monoton
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Such a Jordan curve is also simply
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Therefore, for m = 3, any minimizer
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critical point for variations in th
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Remark V.3. There are situations wh
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Thus the flow x t of the vector-fie
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Another difficulty lies in the rema
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and ‖u(x)−u(y)‖ 2 L ∞ ((∂
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in the middle of this arc : |p −
- Page 41 and 42: V.3 Existence of Parametric disc ex
- Page 43 and 44: We further assume that L is conform
- Page 45 and 46: We note that Γ i (∇u,∇u) :=
- Page 47 and 48: is explicitly given by u(x,y) := lo
- Page 49 and 50: Example 3. We consider a map (ω ij
- Page 51 and 52: norm. The analytical difficulties r
- Page 53 and 54: acting on maps u ∈ W 1,2 (D 2 ,N
- Page 55 and 56: Whence, [ ∆u−H(u)(∇ ⊥ u,∇
- Page 57 and 58: VII Integrabilitybycompensationtheo
- Page 59 and 60: Accordingly, if φ lies in L ∞ ,
- Page 61 and 62: Proof of the regularity of the solu
- Page 63 and 64: If wemultiplytheLaplaceequationthro
- Page 65 and 66: where u still denotes the normal un
- Page 67 and 68: frames, thereby compensating for th
- Page 69 and 70: tangent frame field to T 2 . Define
- Page 71 and 72: egularity. Note that (VI.26) is equ
- Page 73 and 74: Just as in the proof of the regular
- Page 75 and 76: VIII A proof of Heinz-Hildebrandt
- Page 77 and 78: maps, namely ∑n+1 ( −∆u i =
- Page 79 and 80: Theorem VIII.2. [Riv1] Let N n be a
- Page 81 and 82: If A is almost everywhere invertibl
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- Page 85 and 86: Bringing altogether (VIII.15), (VII
- Page 87 and 88: In the simpler case when Ω is dive
- Page 89 and 90: Theorem VIII.5. [Uhl], [Riv1] Let m
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- Page 99 and 100: a meaning to (IX.61) we need at lea
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- Page 103 and 104: form associated to g on S at the po
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- Page 107 and 108: - General relativity : The Willmore
- Page 109 and 110: where ⋆ is the Hodge operator 37
- Page 111 and 112: Let us take locally about p a norma
- Page 113 and 114: and that we have denoted by ( ⃗
- Page 115 and 116: and similarly the second fundamenta
- Page 117 and 118: Let (⃗n 1 ,··· ,⃗n m−2 ) b
- Page 119 and 120: orthonormal basis for the metric g.
- Page 121 and 122: X.4.2 Li-Yau Energy lower bounds an
- Page 123 and 124: Thus ⃗G ∗ ω S m−1(p) = 1 |S
- Page 125 and 126: the half space given by the affine
- Page 127 and 128: where we used that the unit sphere
- Page 129 and 130: Conjecture X.1. Let ⃗ Φ be an im
- Page 131 and 132: dle to Φ(Σ ⃗ 2 ) : for all X
- Page 133 and 134: Let TR m ⃗ Φ([0,1]×Σ 2 ) be th
- Page 135 and 136: imply D ∂ ⃗H = 1 ∂t 2 2∑ D
- Page 137 and 138: We have moreover ∇ es ⃗ V N = =
- Page 139 and 140: for any perturbation V ⃗ which is
- Page 141 and 142: the Willmore Lagrangian ”controls
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written in isothermal coordinates.
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quantity div [ 2∇H ⃗ −3H∇
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where e λ = |∂ x1Φ| ⃗ = |∂x
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Observe that ⎧⎪ ⎨ ⎪ ⎩ 〈
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and consequently ⋆(⃗n∧∇ ⊥
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In one hand the projection into the
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The tangential projection gives 4e
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X.6 Construction of Isothermal Coor
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the Lie algebra iR. Sections of thi
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R m is given by ∇ X σ := π T (d
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Let Σ 2 be a smoothcompactoriented
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There exists a constant C > 0, such
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such a way that ⃗n ρ λ realizes
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We make now use of (X.87) and we de
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We are now in positionto start the
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isabilipschitzdiffeomorphismbetween
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Having defined weak Willmore immers
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Let µ be the solution of ⎧ ⎨
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Combining this inequality with (X.1
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ii) iii) iv) limsupArea( Φ ⃗ k (
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The assumption i) implies that, mod
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Theorem X.14. Let ⃗ Φ be a Lipsc
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Thus < ∇ ⃗ Φ,∇ ⊥ ⃗ L >=
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To that purpose we first compute
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and the following equation holds
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One verifies easily that π T ( ⃗
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From (X.197) we compute ⋆(⃗n
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For any such a vector field X satis
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X.7.4 The conformal Willmore surfac
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Denote ∂ z ⃗ L = A⃗ez +B⃗e
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We have using (X.113) ∂ z ∂ z
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References [Ad] Adams, David R. ”
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[DHKW1] Dierkes, Ulrich; Hildebrand
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larityof weak solutionsof nonlinear
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[Poi] Poisson, Siméon Denis ”Ext