anonanon 152k1212 gold badges233233 silver badges398398 bronze badges $endgroup$ four $begingroup$ That is great many thanks a bunch! I also posted an analogous question right here: math.stackexchange.com/inquiries/2135276/… that you might have some insight on? $endgroup$The Levi-Civita symbol is most often used in 3 and four dimensions, and also