There are multiple different things commonly called "Penrose Diagrams" he invented a lot of cool stuff. Here's another example https://en.wikipedia.org/wiki/Pe

There are multiple different things commonly called "Penrose Diagrams" he invented a lot of cool stuff. Here's another example https://en.wikipedia.org/wiki/Penrose_graphical_notation https://en.wikipedia.org/wiki/Penrose_graphical_notation