SpECTRE
v2024.05.11
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D2xRadius(i,j)
is \(\partial^2 r_{\rm surf}/\partial x^i\partial x^j\). Here \(r_{\rm surf}=r_{\rm surf}(\theta,\phi)\) is the function describing the surface, which is considered a function of Cartesian coordinates \(r_{\rm surf}=r_{\rm surf}(\theta(x,y,z),\phi(x,y,z))\) for this operation.
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#include <Tags.hpp>
Public Types | |
using | type = tnsr::ii< DataVector, 3, Frame > |
D2xRadius(i,j)
is \(\partial^2 r_{\rm surf}/\partial x^i\partial x^j\). Here \(r_{\rm surf}=r_{\rm surf}(\theta,\phi)\) is the function describing the surface, which is considered a function of Cartesian coordinates \(r_{\rm surf}=r_{\rm surf}(\theta(x,y,z),\phi(x,y,z))\) for this operation.