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ztt+Gphyszt+Az=0,A=T∗T≥0,Gphys∗=−Gphys,D(A)=H2(R10),(N2) z_{tt}+G_{\rm phys}z_t+\mathscr A z=0,\qquad \mathscr A=\mathcal T^*\mathcal T\ge0,\qquad G_{\rm phys}^*=-G_{\rm phys},\qquad \mathcal D(\mathscr A)=H^2(\mathbb R^{10}), \tag{N2}

with physical Hilbert space L2(dx)L^2(dx) and form domain H1H^1. The density reconstruction is bounded in this phase space. Finite residual energy alone is a weaker condition than the inhomogeneous physical norm used here.

Exhaustive Static Kernel And The Common-Phase Obstruction

The positive occupied radial and empty forms set u=hl=0u=h_l=0 in a static zero mode. The complete flow square has remainder at least (223/424)wΩ∣v∣2(223/424)w\Omega|v|^2, so v=0v=0 and ∇χ=0\nabla\chi=0. Frame-gradient and phase squares then give constant FF and

θk(x)=αk+(Fξk)⋅x.(N3) \theta_k(x)=\alpha_k+(F\xi_k)\cdot x. \tag{N3}

For η=0\eta=0 all DD constants αk\alpha_k are allowed. For η>0\eta>0 the phase edges force αk=α0+k⋅ϖ\alpha_k=\alpha_0+k\cdot\varpi, a space of dimension d+1d+1. To check the support kernel, put S=W−1/4S=W^{-1/4}. Its first residual gives Z=(L/2)S−5∇SZ=(L/2)S^{-5}\nabla S; the other two become

Bsup/W=(L/2)S−5(∇2S−2I/L2),Gsup=S−10(L2∣∇S∣2/4−S+1). B_{\rm sup}/W=(L/2)S^{-5}(\nabla^2S-2I/L^2),\qquad G_{\rm sup}=S^{-10}(L^2|\nabla S|^2/4-S+1).

Their linearized zero conditions are ∇2δS=0\nabla^2\delta S=0 and x⋅∇δS−δS=0x\cdot\nabla\delta S-\delta S=0. Hence δS\delta S is linear with no constant term, exactly Y=−DsaY=-D_sa for a translation a∈R10a\in\mathbb R^{10}. There is no extra support size or amplitude zero mode. These modes are tangents to the exact translated, rotated and rephased branch, and their physical H2H^2 norms are finite. All 45 frame rotations are retained, including rd=(10−d)(9−d)/2r_d=(10-d)(9-d)/2 rotations in unused directions. Consequently

dim⁡ker⁡A=55+D(η=0),dim⁡ker⁡A=56+d(η>0).(N4) \dim\ker\mathscr A=55+D\quad(\eta=0),\qquad \dim\ker\mathscr A=56+d\quad(\eta>0). \tag{N4}

The integrated gyro pairing of any two static modes vanishes, but the gyro itself annihilates only the unused-frame rotations. In particular, writing αˉ=E[α]\bar\alpha=\mathbb E[\alpha] and γ=α−αˉ+(Fξ)⋅x\gamma=\alpha-\bar\alpha+(F\xi)\cdot x, its covector rows are

(Gk)χ=−a⋅∇w,(Gk)u=−2wγ,(Gk)Y=−w′(W0)αˉeW,(Gk)v=μsDsTDsa−εwBγ.(N5) (Gk)_\chi=-a\cdot\nabla w,\quad (Gk)_u=-2w\gamma,\quad (Gk)_Y=-w'(W_0)\bar\alpha e_W,\quad (Gk)_v=\mu_sD_s^TD_sa-\varepsilon wB\gamma. \tag{N5}

The frame and horizontal-phase rows vanish. Integration of the possible support/common-phase pairing gives ∫∂iw dx=0\int\partial_iw\,dx=0. This necessary orthogonality does not imply that −Gphysk-G_{\rm phys}k lies in the range of A\mathscr A at its essential zero threshold.

A generalized partner means a finite physical solution z(t)=tk+z1z(t)=tk+z_1 with Ak=0\mathscr A k=0 and Az1=−Gphysk\mathscr A z_1=-G_{\rm phys}k. A nonzero αˉ\bar\alpha would require the independent support equation KsY=αˉw′(W0)eWK_sY=\bar\alpha w'(W_0)e_W. In its exterior,

w′(W0)=2σϵp8L8∣x∣−8[1+O(∣x∣−2)],μs=Csσϵp8[1+O(∣x∣−2)]. w'(W_0)=2\sigma\epsilon_p^8L^8|x|^{-8}[1+O(|x|^{-2})],\qquad \mu_s=C_s\sigma\epsilon_p^8[1+O(|x|^{-2})].

Take nonnegative nonzero φ∈Cc∞(1<∣x∣<2)\varphi\in C_c^\infty(1<|x|<2), fR=R−5φ(x/R)f_R=R^{-5}\varphi(x/R) and

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