Anonanon 152k1212 gold badges233233 silver badges398398 bronze badges $endgroup$ 4 $begingroup$ Which is excellent many thanks a bunch! I also posted a similar problem in this article: math.stackexchange.com/issues/2135276/… that you might have some insight on? $endgroup$ The Levi-Civita image is most often Employed in 3 and four dimensions, and to https://paulh467khb9.bloguerosa.com/profile