There is a bijection between trees and 7 tuples of trees. https://arxiv.org/abs/math/9405205 … I like this excerpt. "The reader who objects that this is nonsense has not truly entered into the eighteenth-century spirit"pic.twitter.com/X1RgHoDtFc
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The julia sets of the polynomials in http://math.ucr.edu/home/baez/week202.html … in the tree with signs from the direction of the arrow