In Einstein notation, the duplication from the i index indicates the sum on i. The past is then denoted εijkεimn = δjmδkn − δjnδkm. but notice that When the metric signature includes an odd number of unfavorable eigenvalues q, then the signal from the components of this tensor differ from https://levis4d-slot-gacor26935.theisblog.com/26880932/the-smart-trick-of-rtp-levis4d-that-nobody-is-discussing