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Search options not deleted user 138705
4 votes
0 answers
137 views

Range of divergence operator on the space of traceless symmetric $(0,2)$ tensors; conformal ...

Let $\gamma$ be a metric on $S^2$. I am trying to solve the following PDE on a $(0,2)$ symmetric traceless tensor $A$: $$div_{\gamma} A = \omega$$ where $\omega$ is a 1-form. It is known that there ex …
Laithy's user avatar
  • 969
2 votes
0 answers
47 views

Growth/Decay of conformal Killing fields in cone metrics

Let $\gamma$ be a smooth metric on $S^2$ of positive curvature. Consider the metric $$g= dr^2 + r^2 \gamma$$ on $[1,\infty) \times S^2$. Does there exist a nontrivial conformal Killing field vanishing …
Laithy's user avatar
  • 969
1 vote
0 answers
245 views

Divergence of conformal Killing vector fields on $S^2$ and the spherical harmonics

Can anyone think of a conformal Killing vector field $W$ on $S^2$ with the round metric that is not Killing such that its divergence is $L^2$-orthogonal to the spherical harmonics with $\ell = 1$? One …
Laithy's user avatar
  • 969