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I. What does
A_{[\alpha} B_{\beta]}
mean? How do you expand this?
II. How do you put TeX in board posts?
A_{[\alpha} B_{\beta]}
mean? How do you expand this?
II. How do you put TeX in board posts?
[ tex ] A_{[\alpha} B_{\beta]} [ /tex ] (remove the spaces in the tags)bigplanet401 said:I. What does
A_{[\alpha} B_{\beta]}
mean? How do you expand this?
II. How do you put TeX in board posts?
I think there is an inconsistency in your use of the brackets in the "no number convention" [tex] F_{\mu\nu}\equiv F_{\left[\mu\nu\right]}=:\partial_{[\mu}A_{\nu]} [/tex]dextercioby said:It's not necessary to use the numerical factor (we call it "weght"). See for example the em. tensor in vacuum. U can use the "no number convention" (i use it)
[tex] F_{\mu\nu}\equiv F_{\left[\mu\nu\right]}=:\partial_{[\mu}A_{\nu]} [/tex]
or the one Rob exemplified, when an ugly 2 comes up
[tex] F_{\mu\nu}\equiv F_{\left[\mu\nu\right]}=:2 \partial_{[\mu}A_{\nu]} [/tex]
Daniel.
So, maybe I am misunderstanding what your "no number convention" is.dextercioby said:I didn't in any place claim that
[tex] F_{[\mu\nu]}=F_{\mu\nu}-F_{\nu\mu} [/tex]
So no inconsistency. Whatsoever.
Daniel.