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Unfortunate naming. There’s already a notation for tensors called Penrose graphical notation: https://en.m.wikipedia.org/wiki/Penrose_graphical_notation

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As well as Penrose diagrams, which are something entirely different.

There's even a Penrose tiling, Penrose triangle and Penrose stairs.

So yeah, not ideal for a graphics framework.

Err, that's the whole reason it is named this way. People will anyway need to specify what kind of penrose thing they want (stairs, triangle, tiling, graphics framework, ...)

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