Contents · Previous · Next

YR=(fR,−L∇fR/8)Y_R=(f_R,-L\nabla f_R/8). The first linear support residual cancels exactly. For zR=μsYRz_R=\sqrt{\mu_s}Y_R, the remaining squared residuals give ∥AszR∥2≤CR−3\|\mathscr A_s z_R\|_2\le CR^{-3} on that annulus, whereas R3∫w′(W0)fR dxR^3\int w'(W_0)f_R\,dx tends to a strictly positive constant. A physical L2L^2 solution would instead make this pairing at most CR−3∥Yphys∥L2(R<∣x∣<2R)=o(R−3)CR^{-3}\|Y_{\rm phys}\|_{L^2(R<|x|<2R)}=o(R^{-3}). This contradiction excludes the common-phase partner. No other kernel source enters that support equation and can cancel it.

The Remaining Coupled Spatial Range Problem

Physical translation already has the exact boost partner

ka:Y=−Dsa,θk=−ξk⋅a;z1,a:v=a,χ=−Ωa⋅x,(N6) k_a:\quad Y=-D_sa,\quad\theta_k=-\xi_k\cdot a; \qquad z_{1,a}:\quad v=a,\quad\chi=-\Omega a\cdot x, \tag{N6}

with other entries zero. Its combined kinetic and static energy is QΩ∣a∣2/2Q\Omega|a|^2/2, so its complete inertia is QΩIQ\Omega I. Unused-frame rotations have zero corrector and inertia κEQ\kappa_EQ per orthonormal rotation generator. Subtract these boosts before solving the remaining range equation; its translation parameter is then zero.

Let H\mathsf H be the actual radial Hessian, defined by Qrad(u)=E[uHu]/2Q_{\rm rad}(u)=\mathbb E[u\mathsf Hu]/2 on E[u]=0\mathbb E[u]=0. For a0=N/(d+1)a_0=N/(d+1) and Δiu(k)=u0+uk−uei−uk−ei\Delta_i u(k)=u_0+u_k-u_{e_i}-u_{k-e_i}, it is fixed explicitly by

Qrad/Ω=−4E[u2]+4λE[(u0−uk)2]+4λE ⁣∑i:ki>0(uk−ei−uk)2+4λa02∑i≠j≤d∑k:ki>0(uk−uk−ei+ej)2+ληE ⁣∑i:ki>0(Δiu(k))2.(N7) \begin{aligned} Q_{\rm rad}/\Omega={}&-4\mathbb E[u^2] +4\lambda\mathbb E[(u_0-u_k)^2] +4\lambda\mathbb E\!\sum_{i:k_i>0}(u_{k-e_i}-u_k)^2\\ &+4\lambda a_0^2\sum_{i\ne j\le d}\sum_{k:k_i>0} (u_k-u_{k-e_i+e_j})^2 +\lambda\eta\mathbb E\!\sum_{i:k_i>0}(\Delta_i u(k))^2. \end{aligned} \tag{N7}

The exchange term is an ordinary sum. The anchor identity implies H≥8Ω(λ−1)I\mathsf H\ge8\Omega(\lambda-1)I; no covariance or scalar substitute is made for its inverse. Define

T=μsDsTDs/w,R(x)=νI−εCξ−T(x),R∞=νI−εCξ. T=\mu_sD_s^TD_s/w,\quad R(x)=\nu I-\varepsilon C_\xi-T(x),\quad R_\infty=\nu I-\varepsilon C_\xi.

The actual support gives T≥0T\ge0, ∥T(x)∥≤C/(1+∣x∣2)\|T(x)\|\le C/(1+|x|^2) and R(x)≥(223/424)ΩIR(x)\ge(223/424)\Omega I. For example, with y=x/Ly=x/L, t=∣y∣2t=|y|^2, S=1+tS=1+t,

T=CsL2{S−2I+[64S−2−20S−3+100tS−4]yyT}. T=\frac{C_s}{L^2}\left\{S^{-2}I+ [64S^{-2}-20S^{-3}+100tS^{-4}]yy^T\right\}.

With any allowed centered αh\alpha_h and antisymmetric physical rotation FF, put γk(x)=αh,k+(Fξk)⋅x\gamma_k(x)=\alpha_{h,k}+(F\xi_k)\cdot x. The full reduced problem, retaining all ten flow components, is

Hu−ε4w−1∇⋅(w∇u)+2κB∗L0=2γ,−κ∇⋅(wL0)=0,−gw−1∇⋅(w∇v)+κνL0+R(x)v=εBγ,L0=∇χ+2Bu+νv.(N8) \begin{aligned} \mathsf Hu-\frac\varepsilon4w^{-1}\nabla\cdot(w\nabla u) +2\kappa B^*L_0&=2\gamma,\\ -\kappa\nabla\cdot(wL_0)&=0,\\ -g w^{-1}\nabla\cdot(w\nabla v)+\kappa\nu L_0+R(x)v &=\varepsilon B\gamma,\\ L_0&=\nabla\chi+2Bu+\nu v. \end{aligned} \tag{N8}

Its unresolved sources were the dd relative registrations and 45−rd45-r_d active rotations. The following proof treats all of them and also the allowed constant nonaffine phases when η=0\eta=0.

A Range Estimate Without A Gap

Set X=(u,v)X=(u,v), with its finite inner product given by E\mathbb E on uu and the ordinary Euclidean product on vv, and define

PX=2Bu+νv,Dg=diag⁡(εI/4,gI),M(x)=diag⁡(H,R(x)),M∞=diag⁡(H,R∞),V=M∞−M=diag⁡(0,T). PX=2Bu+\nu v,\quad D_g=\operatorname{diag}(\varepsilon I/4,gI),\quad M(x)=\operatorname{diag}(\mathsf H,R(x)),\quad M_\infty=\operatorname{diag}(\mathsf H,R_\infty),\quad V=M_\infty-M=\operatorname{diag}(0,T).

The symmetric form for (N8) is

Contents · Previous · Next