Comment by srean

I never knew Hokusai had interest in these.

Does anyone know if he had seen any Islamic tiling art ? Or for that matter if Escher had seen any of his.

Group theory / symmetry runs deep through these. One [0] of the circular ones made me think of braid(group)s. Not sure what the * operator would be in that case.

Speaking of braid groups Richeson had a very interesting blog post on the braid like groups of maypole dances.

Let me find and submit separately (spoiling a Hokusai story with another story, no matter how interesting, would be a personal sacrilege). Found it [1][2].

[0] https://divisbyzero.com/2009/05/04/the-maypole-braid-group/