Anonanon 152k1212 gold badges233233 silver badges398398 bronze badges $endgroup$ 4 $begingroup$ Which is excellent many thanks a bunch! I also posted an analogous problem below: math.stackexchange.com/thoughts/2135276/… that you might have some Perception on? $endgroup$ The Levi-Civita symbol is most often used in 3 and four dimensions, also to some extent https://anatolv345ljg4.blog2freedom.com/profile