Anonanon 152k1212 gold badges233233 silver badges398398 bronze badges $endgroup$ four $begingroup$ That is excellent many thanks a bunch! I also posted an analogous question here: math.stackexchange.com/issues/2135276/… that You could have some Perception on? $endgroup$ The Levi-Civita symbol is most often used in 3 and 4 Proportions, also to some extent https://woodyz233cyv9.blogdeazar.com/profile