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 RHS AST from SymPy:

Symbols in Expression \(\left( \delta^{l}_{\ \ j} \delta^{m}_{\ \ k} - \delta^{l}_{\ \ k} \delta^{m}_{\ \ h} \right) \hat{x}_i \nabla_j \nabla^m E^n=\vec{ \nabla}( \vec{ \nabla} \cdot \vec{E} - \nabla^2 \vec{E})\)

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ID latex name description reference dimension: time dimension: length dimension: mass dimension: electric charge dimension: luminous intensity dimension: amount of substance dimension: temperature scope domain
0000006238 E
\(E\)		 electric field https://en.wikipedia.org/wiki/Electric_field 0 0 0 0 0 0 0 real any
0000001552 j
\(j\)		 index 0 0 0 0 0 0 0 integer any
0000007930 m
\(m\)		 index 0 0 0 0 0 0 0 integer any
0000008304 l
\(l\)		 index 0 0 0 0 0 0 0 integer any
0000001592 n
\(n\)		 index 0 0 0 0 0 0 0 integer any
0000009690 k
\(k\)		 index 0 0 0 0 0 0 0 integer any
0000008349 \hat{x}_i
\(\hat{x}_i\)		 ith unit vector 0 0 0 0 0 0 0 real any
0000004326 \vec{E}
\(\vec{E}\)		 electric field https://en.wikipedia.org/wiki/Electric_field 0 0 0 0 0 0 0 complex any

Add Symbol to Expression \(\left( \delta^{l}_{\ \ j} \delta^{m}_{\ \ k} - \delta^{l}_{\ \ k} \delta^{m}_{\ \ h} \right) \hat{x}_i \nabla_j \nabla^m E^n=\vec{ \nabla}( \vec{ \nabla} \cdot \vec{E} - \nabla^2 \vec{E})\)

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Remove Symbol used in Expression \(\left( \delta^{l}_{\ \ j} \delta^{m}_{\ \ k} - \delta^{l}_{\ \ k} \delta^{m}_{\ \ h} \right) \hat{x}_i \nabla_j \nabla^m E^n=\vec{ \nabla}( \vec{ \nabla} \cdot \vec{E} - \nabla^2 \vec{E})\)

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Operations in Expression \(\left( \delta^{l}_{\ \ j} \delta^{m}_{\ \ k} - \delta^{l}_{\ \ k} \delta^{m}_{\ \ h} \right) \hat{x}_i \nabla_j \nabla^m E^n=\vec{ \nabla}( \vec{ \nabla} \cdot \vec{E} - \nabla^2 \vec{E})\)

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Relation in Expression \(\left( \delta^{l}_{\ \ j} \delta^{m}_{\ \ k} - \delta^{l}_{\ \ k} \delta^{m}_{\ \ h} \right) \hat{x}_i \nabla_j \nabla^m E^n=\vec{ \nabla}( \vec{ \nabla} \cdot \vec{E} - \nabla^2 \vec{E})\)

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