Template talk:Editnotices/Page/Mathematical descriptions of the electromagnetic field

This template refers to part of the differential geometry formulation used for electromagnetism. At one point the Maxwell's equations article included this formulation, after a rewrite [1][2] this content (which the edit notice is referring to) was moved to Maths of EM field.

This edit notice should be moved to Template:Editnotices/Page/Mathematical descriptions of the electromagnetic field where it applies, it is irrelevant in Maxwell's equations now. z = z² + c 09:45, 17 July 2012 (UTC)

Done But the edit notice needs to be greatly cleaned up. Use {{editnotice}}, clarify what "the formula below" is referring to or otherwise reword it to make sense, put the formulas in <math>, and so on so it's easier to read. Anomie⚔ 16:44, 18 July 2012 (UTC)

By my own judgement this would be the reworded notice:

but I'm not proficient in differential geometry (yet) so I asked here just to make sure it makes sense. I asked the original creator (user:Koavf) but he was not sure either. Please wait before transplanting this with the current version. Thank you for moving it. z = z² + c 19:39, 18 July 2012 (UTC)

If J is a 3-form, then the correct formula is $J=d(\star F)$, but neither of the above. It is only $d(\star F)$ which is a (not necessarily zero) 3-form, because $dF=0$, and Hodge duals to 3-forms are 1-forms in 4-space. Incnis Mrsi (talk) 07:50, 19 July 2012 (UTC)

$d\star F=J$ is the one in the article, the notice was supposed to indicate not changing some other formula to $\star d\star F=J$.

Lets just simplify it by writing

"leave Maxwell's equations as $d\star F=J,dF=0$"

in place of

"Please do not change $d\,{\star F}={\star J}$ to ${\star d}\,{\star F}=J$ (LHS 1 form, RHS 3 form)."

Agreed?z = z² + c 08:15, 19 July 2012 (UTC)

I tried fixing some of the article maths of EM field which includes both conventions (current as a 3-form and a 1-form), so I'm not sure if this notice is even needed anymore... this template notice may as well be deleted since the article now explains what the notice says anyway... z = z² + c 08:43, 19 July 2012 (UTC)

Do not say "d\star F", because LaTeX and MathJax think \star is a binary operator and resulting spacing is confusing. You can say "d\,{\star F}": $d\,{\star F}$ if you dislike parentheses. Incnis Mrsi (talk) 09:07, 19 July 2012 (UTC)

Sorry I'll fix that. z = z² + c 09:28, 19 July 2012 (UTC)