- #1
Lyalpha
- 12
- 0
My understanding of the Einstein Summation convention is that you sum over the repeated indices. But when I look at the metric tensor for a flat space I know that
g[itex]^{λ}_{λ}[/itex] = 1
But the summation convention makes me think that it should equal the trace of the matrix g_{μσ}. So it should be the number of dimensions of the space?
g[itex]^{λ}_{λ}[/itex] = 1
But the summation convention makes me think that it should equal the trace of the matrix g_{μσ}. So it should be the number of dimensions of the space?