I posted two images of exactly these things. Note the parenthesis I used around the word neutral, and words such a "similarities" & "equivalent." The wing has a single element in the center, flanked by two-element sections at either end. It would seem inevitable that spillover will be created from this design, resulting in something like a Y250 in terms of location and direction of rotation.
A wingtip vortex is all it is—most subsonic wings exhibit them. Why do you consider it a complicated phenomenon?
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