Open kpeeters opened 3 years ago
It may sometimes be useful to make the sum over index values explicit for a particular set only, e.g. to expand
\partial_{\mu}{ A_{a b} } \partial^{\mu}{ A_{b a} }
by writing out the sums over a, b but not \mu.
a, b
\mu
It may sometimes be useful to make the sum over index values explicit for a particular set only, e.g. to expand
by writing out the sums over
a, b
but not\mu
.