Tetraktys as a graph

Tetraktys

Pythagoreans possessed a secret plan of the universe, called tetractys. It could be quickly arranged with 10 pebbles. This was also their most sacred symbol -- it served as an oath guard.

[Soon: tetraktys, music and quarks]

The harmonic evolution digraph is

Tree = T₄

Loops = L₁ + 9 L₇

Comment: It has been noted often that tetraktys was the source and inspiration for the cabalistic sefirot, or "tree of life." Although the sefirot tree has a different structure, their harmonic evolution digraphs are almost identical! The loop part is the same; the trees are rearranged. Note the presence of the mystic number 7 --- that is the length of the cycle in each of this graphs.

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