Anonanon 152k1212 gold badges233233 silver badges398398 bronze badges $endgroup$ four $begingroup$ Which is best many thanks a bunch! I also posted a similar query here: math.stackexchange.com/questions/2135276/… that you might have some insight on? $endgroup$ The importance of Levi-Civita Qualities in 4 dimensions lies of their purpose in the mathematical description https://cesarsqmlg.link4blogs.com/48925698/not-known-details-about-levis-4d